Lithium Iodide Original Commentary - Groupe Charette
... The stereoselective ring opening of an allylic epoxide to an (E)allylic iodide was achieved using a combination of LiI and scandium trifluoromethanesulfonate (eq 12).28 In contrast, 9-bromo9-borabicyclo[3.3.1]nonane furnished the corresponding (Z)allylic bromide selectively. LiI transforms 2,3-epoxy ...
... The stereoselective ring opening of an allylic epoxide to an (E)allylic iodide was achieved using a combination of LiI and scandium trifluoromethanesulfonate (eq 12).28 In contrast, 9-bromo9-borabicyclo[3.3.1]nonane furnished the corresponding (Z)allylic bromide selectively. LiI transforms 2,3-epoxy ...
研 究 業 績 リ ス ト
... Y. Miyake, A. Oyamada, Y. Nishibayashi, S. Uemura Heteroatom Chemistry, 13, 270–275 (2002). (50) Ruthenium-Catalyzed Cycloaddition of Propargylic Alcohols with Phenol Derivatives via Allenylidene Intermediates: Catalytic Use of the Allenylidene Ligand as C3 Unit Y. Nishibayashi, Y. Inada, M. Hidai, ...
... Y. Miyake, A. Oyamada, Y. Nishibayashi, S. Uemura Heteroatom Chemistry, 13, 270–275 (2002). (50) Ruthenium-Catalyzed Cycloaddition of Propargylic Alcohols with Phenol Derivatives via Allenylidene Intermediates: Catalytic Use of the Allenylidene Ligand as C3 Unit Y. Nishibayashi, Y. Inada, M. Hidai, ...
N - Clayton State University
... Methanol, CH3OH, called methyl alcohol, is a common solvent, a fuel additive, produced in large quantities Ethanol, CH3CH2OH, called ethyl alcohol, is a solvent, fuel, beverage OH groups bonded to vinylic sp2-hybridized carbons are called enols ...
... Methanol, CH3OH, called methyl alcohol, is a common solvent, a fuel additive, produced in large quantities Ethanol, CH3CH2OH, called ethyl alcohol, is a solvent, fuel, beverage OH groups bonded to vinylic sp2-hybridized carbons are called enols ...
A review of new developments in the Friedel–Crafts - Beilstein
... BF3, BeCl2, TiCl4, SbCl5 or SnCl4 have been described as catalysts for the FC alkylation. Furthermore, strong Brønsted-acids including sulfuric acid, hydrofluoric acid or super acids such as HF•SbF5 and HSO3F•SbF5 have also been shown to accelerate this transformation. Despite the great importance o ...
... BF3, BeCl2, TiCl4, SbCl5 or SnCl4 have been described as catalysts for the FC alkylation. Furthermore, strong Brønsted-acids including sulfuric acid, hydrofluoric acid or super acids such as HF•SbF5 and HSO3F•SbF5 have also been shown to accelerate this transformation. Despite the great importance o ...
Full-Text PDF
... mol % of tetrakis(acetonitrile)copper(I) triflate was able to efficiently catalyze the transformation of phenol 1 to the corresponding phenyl acetate 2 in 3 min and in quantitative yield. the model substrate and acetic anhydride (4 equivalents) as the acetylation agent, we found that 1 the model ...
... mol % of tetrakis(acetonitrile)copper(I) triflate was able to efficiently catalyze the transformation of phenol 1 to the corresponding phenyl acetate 2 in 3 min and in quantitative yield. the model substrate and acetic anhydride (4 equivalents) as the acetylation agent, we found that 1 the model ...
Ch14_PT MULTIPLE CHOICE. Choose the one alternative that best
... A) primary; its -OH group is on the end of the molecule B) tertiary; the -OH is bonded to the number 3 carbon C) secondary; each group bonded to the hydroxyl carbon contains two carbon atoms D) secondary; the carbon bonded to the -OH group is bonded to two other carbons E) primary; it has one -OH gr ...
... A) primary; its -OH group is on the end of the molecule B) tertiary; the -OH is bonded to the number 3 carbon C) secondary; each group bonded to the hydroxyl carbon contains two carbon atoms D) secondary; the carbon bonded to the -OH group is bonded to two other carbons E) primary; it has one -OH gr ...
Synthesis of alternating hydroxy-and methyl
... sandwich complexes containing from two to five metal atoms in a single ~ h a i n , ~ complex -I~ 2 is the first homoleptic complex of this type containing all arene ligands. Only one other compound in this class, ($-C5H5)2(p-$':$-arene)V2, possesses an $-arene ring symmetrically bridging two metal c ...
... sandwich complexes containing from two to five metal atoms in a single ~ h a i n , ~ complex -I~ 2 is the first homoleptic complex of this type containing all arene ligands. Only one other compound in this class, ($-C5H5)2(p-$':$-arene)V2, possesses an $-arene ring symmetrically bridging two metal c ...
Preparation of ethers
... are only representative of the classes of compounds which may be employed as reactants, and that the present in tion willd?nd use as ‘solvents in industry while alkylaryl vention is not necessarily limited thereto. ethers are used as pharmaceuticals, antioxidants, antiozo The catalysts which are to ...
... are only representative of the classes of compounds which may be employed as reactants, and that the present in tion willd?nd use as ‘solvents in industry while alkylaryl vention is not necessarily limited thereto. ethers are used as pharmaceuticals, antioxidants, antiozo The catalysts which are to ...
Ether - Clayton State University
... Rules for naming alcohols For single hydroxy (-OH) group • Step 1: Identify longest chain that includes (-OH) group. Drop –e from hydrocarbon name, and replace with ending –ol. • Step 2: Number this parent chain to give lowest number to carbon with attached (-OH) group. • Step 3: Locate position of ...
... Rules for naming alcohols For single hydroxy (-OH) group • Step 1: Identify longest chain that includes (-OH) group. Drop –e from hydrocarbon name, and replace with ending –ol. • Step 2: Number this parent chain to give lowest number to carbon with attached (-OH) group. • Step 3: Locate position of ...
Transformation of Carbon Dioxide
... formation of a methyl carbonato complex through a reaction of tin methoxide with CO2 was reported in 1967.48,49 The formation of DMC upon thermolysis of methyl (carbonato) tin was first reported in 1975, but the yield was very low; only 10% based on tin.50 Another group later reported similar result ...
... formation of a methyl carbonato complex through a reaction of tin methoxide with CO2 was reported in 1967.48,49 The formation of DMC upon thermolysis of methyl (carbonato) tin was first reported in 1975, but the yield was very low; only 10% based on tin.50 Another group later reported similar result ...
4.04 Nomenclature and Isomerism in Organic Chemistry
... rotation. An equimolar mixture of two optical isomers will thus have no effect on plane polarised light and is thus not optically active. Such mixtures are said to be racemic mixtures or racemates. A racemic mixture is an equimolar mixture of two optical isomers. Racemic mixtures are not optically a ...
... rotation. An equimolar mixture of two optical isomers will thus have no effect on plane polarised light and is thus not optically active. Such mixtures are said to be racemic mixtures or racemates. A racemic mixture is an equimolar mixture of two optical isomers. Racemic mixtures are not optically a ...
Chapter 19 Carboxylic Acid Derivatives Nucleophilic Acyl
... For thioesters: Sulfur is a third row element, like chlorine, and so it is considerably larger than oxygen. The C-S bond is relatively long and this makes for poor overlap of the lone pair 3p orbital and the π-orbital of the carbonyl. But thioesters are less reactive than acid chlorides and anhydrid ...
... For thioesters: Sulfur is a third row element, like chlorine, and so it is considerably larger than oxygen. The C-S bond is relatively long and this makes for poor overlap of the lone pair 3p orbital and the π-orbital of the carbonyl. But thioesters are less reactive than acid chlorides and anhydrid ...
NOMENCLATURE OF ORGANIC COMPOUNDS - A
... rotation. An equimolar mixture of two optical isomers will thus have no effect on plane polarised light and is thus not optically active. Such mixtures are said to be racemic mixtures or racemates. A racemic mixture is an equimolar mixture of two optical isomers. Racemic mixtures are not optically a ...
... rotation. An equimolar mixture of two optical isomers will thus have no effect on plane polarised light and is thus not optically active. Such mixtures are said to be racemic mixtures or racemates. A racemic mixture is an equimolar mixture of two optical isomers. Racemic mixtures are not optically a ...
Aldehydes and Ketones
... hemiacetals [RCH(OH)OR']. Further reaction with excess alcohol gives acetals [RCH(OR')2]. Ketones react similarly. These reactions are reversible; that is, acetals can be readily hydrolyzed by aqueous acid to their alcohol and carbonyl components. Water adds similarly to the carbonyl group of certai ...
... hemiacetals [RCH(OH)OR']. Further reaction with excess alcohol gives acetals [RCH(OR')2]. Ketones react similarly. These reactions are reversible; that is, acetals can be readily hydrolyzed by aqueous acid to their alcohol and carbonyl components. Water adds similarly to the carbonyl group of certai ...
Name_____________________________________ 22 • Organic
... is added. The resulting product will react with a base to form a salt and water. When the new product in container X is mixed with container Y and H2SO4 is added, the chemist is able to confirm that: ...
... is added. The resulting product will react with a base to form a salt and water. When the new product in container X is mixed with container Y and H2SO4 is added, the chemist is able to confirm that: ...
Organic Chemistry – Who needs it?
... Aromatic groups are six membered ring compounds that have aromaticity. There are three double bonds distributed evenly over the six carbon atoms. This resonance of the double bond provides the compound in which it is contained with very specific characteristics: A delocalized conjugated π system, ...
... Aromatic groups are six membered ring compounds that have aromaticity. There are three double bonds distributed evenly over the six carbon atoms. This resonance of the double bond provides the compound in which it is contained with very specific characteristics: A delocalized conjugated π system, ...
The Carbonyl Group Nomenclature of Aldehydes and Ketones
... – Hydrocarbons are nonpolar, and have low boiling points. – Aldehydes and ketones are polar, so they have higher boiling points than hydrocarbons, but they are not as polar as molecules which can hydrogen bond. ...
... – Hydrocarbons are nonpolar, and have low boiling points. – Aldehydes and ketones are polar, so they have higher boiling points than hydrocarbons, but they are not as polar as molecules which can hydrogen bond. ...
Chapter 6 Addition Reactions to Alkenes
... CH3 H OH group is attached to the less substituted carbon. ...
... CH3 H OH group is attached to the less substituted carbon. ...
19.7 Reversible Addition Reactions of Aldehydes and Ketones
... selective than LiAlH4 • LiAlH4 reacts with alkyl halides, alkyl tosylates, and nitro groups, but NaBH4 does not ...
... selective than LiAlH4 • LiAlH4 reacts with alkyl halides, alkyl tosylates, and nitro groups, but NaBH4 does not ...
hydrogen peroxide disproportionation and organic
... thank Dr. Ana Ison for all of her support during this process. Ana was always around to discuss ideas about projects. I would also like thank her for the help she provided in acquiring the GC data. I would especially like to thank Dr. Celeste Regino. Celeste taught me the intricacies of HPLC and tha ...
... thank Dr. Ana Ison for all of her support during this process. Ana was always around to discuss ideas about projects. I would also like thank her for the help she provided in acquiring the GC data. I would especially like to thank Dr. Celeste Regino. Celeste taught me the intricacies of HPLC and tha ...
Camp 1 - TypePad
... • They do not react with reducing agents such as H2 in the presence of a transition metal catalyst. • They are not affected by most acids or bases at moderate temperatures. Because of their general inertness and good solvent properties, ethers, such as diethyl ether and THF, are excellent solvents i ...
... • They do not react with reducing agents such as H2 in the presence of a transition metal catalyst. • They are not affected by most acids or bases at moderate temperatures. Because of their general inertness and good solvent properties, ethers, such as diethyl ether and THF, are excellent solvents i ...
Unit X Organic Chem (SmartBoard)
... linked to one another to form a “CARBON CHAIN”. A series of structures that differ from each other by one structural unit, in this case —CH2—, are called a HOMOLOGOUS SERIES. Because the chain of carbon atoms extends in a straight-line they are called “STRAIGHT-CHAIN” or “UNBRANCHED” hydrocarbons. T ...
... linked to one another to form a “CARBON CHAIN”. A series of structures that differ from each other by one structural unit, in this case —CH2—, are called a HOMOLOGOUS SERIES. Because the chain of carbon atoms extends in a straight-line they are called “STRAIGHT-CHAIN” or “UNBRANCHED” hydrocarbons. T ...
Organic Chemistry - hrsbstaff.ednet.ns.ca
... • the reasons why one theory is favoured over the other Record your findings in the form of a brief report. Include your own assessment of the ...
... • the reasons why one theory is favoured over the other Record your findings in the form of a brief report. Include your own assessment of the ...
Microsoft Word
... the yield the acid was converted to Weinreb amide 35 by treatment with MeNHOMe.HCl, iPr2NEt and EDCI in CH2Cl2. Reaction of prenyl lithium with Weinreb amide 35 in a mixture of ...
... the yield the acid was converted to Weinreb amide 35 by treatment with MeNHOMe.HCl, iPr2NEt and EDCI in CH2Cl2. Reaction of prenyl lithium with Weinreb amide 35 in a mixture of ...
ALCOHOLS, ETHERS, PHENOLS, AND THIOLS
... All three compounds are alcohols. 1-pentanol has the lowest molar mass and hence the lowest boiling point. 1-octanol has a higher molar mass and therefore a higher boiling point than 1-pentanol. 1,2-pentanediol has two ¬ OH groups and therefore forms more hydrogen bonds than the other two alcohols w ...
... All three compounds are alcohols. 1-pentanol has the lowest molar mass and hence the lowest boiling point. 1-octanol has a higher molar mass and therefore a higher boiling point than 1-pentanol. 1,2-pentanediol has two ¬ OH groups and therefore forms more hydrogen bonds than the other two alcohols w ...
Haloalkane
The haloalkanes (also known, as halogenoalkanes or alkyl halides) are a group of chemical compounds derived from alkanes containing one or more halogens. They are a subset of the general class of halocarbons, although the distinction is not often made. Haloalkanes are widely used commercially and, consequently, are known under many chemical and commercial names. They are used as flame retardants, fire extinguishants, refrigerants, propellants, solvents, and pharmaceuticals. Subsequent to the widespread use in commerce, many halocarbons have also been shown to be serious pollutants and toxins. For example, the chlorofluorocarbons have been shown to lead to ozone depletion. Methyl bromide is a controversial fumigant. Only haloalkanes which contain chlorine, bromine, and iodine are a threat to the ozone layer, but fluorinated volatile haloalkanes in theory may have activity as greenhouse gases. Methyl iodide, a naturally occurring substance, however, does not have ozone-depleting properties and the United States Environmental Protection Agency has designated the compound a non-ozone layer depleter. For more information, see Halomethane. Haloalkane or alkyl halides are the compounds which have the general formula ″RX″ where R is an alkyl or substituted alkyl group and X is a halogen (F, Cl, Br, I).Haloalkanes have been known for centuries. Chloroethane was produced synthetically in the 15th century. The systematic synthesis of such compounds developed in the 19th century in step with the development of organic chemistry and the understanding of the structure of alkanes. Methods were developed for the selective formation of C-halogen bonds. Especially versatile methods included the addition of halogens to alkenes, hydrohalogenation of alkenes, and the conversion of alcohols to alkyl halides. These methods are so reliable and so easily implemented that haloalkanes became cheaply available for use in industrial chemistry because the halide could be further replaced by other functional groups.While most haloalkanes are human-produced, non-artificial-source haloalkanes do occur on Earth, mostly through enzyme-mediated synthesis by bacteria, fungi, and especially sea macroalgae (seaweeds). More than 1600 halogenated organics have been identified, with bromoalkanes being the most common haloalkanes. Brominated organics in biology range from biologically produced methyl bromide to non-alkane aromatics and unsaturates (indoles, terpenes, acetogenins, and phenols). Halogenated alkanes in land plants are more rare, but do occur, as for example the fluoroacetate produced as a toxin by at least 40 species of known plants. Specific dehalogenase enzymes in bacteria which remove halogens from haloalkanes, are also known.