Chemistry Primer Lecture Note Slides - GCC
... more carbon-carbon double or triple bonds) §Cyclic hydrocarbons (molecules containing one or more carbon rings) §Aromatic hydrocarbons (molecules that contain one or more aromatic rings, which can be described as cyclic molecules with alternating double and single bonds) From McKee and McKee, Bioche ...
... more carbon-carbon double or triple bonds) §Cyclic hydrocarbons (molecules containing one or more carbon rings) §Aromatic hydrocarbons (molecules that contain one or more aromatic rings, which can be described as cyclic molecules with alternating double and single bonds) From McKee and McKee, Bioche ...
Study Guide Exam 2 and 3 Sp2011
... If you are trying to determine if an amine is a primary, secondary or tertiary, you now replace the C with the N and the OH with lone pair of electrons on the picture for alcohols. Depending on how many other carbon atoms are bound to the nitrogen determines if it is primary, secondary or tertiary. ...
... If you are trying to determine if an amine is a primary, secondary or tertiary, you now replace the C with the N and the OH with lone pair of electrons on the picture for alcohols. Depending on how many other carbon atoms are bound to the nitrogen determines if it is primary, secondary or tertiary. ...
Metalloradicals
... by EPR spectroscopy. The electronic structure of C is noteworthy. The species is a carbon-centered radical and is best described as a one-electron-reduced Fischer-type carbene. These results clearly underline the general importance of redox noninnocent ligands54 and represent a rare example of the ...
... by EPR spectroscopy. The electronic structure of C is noteworthy. The species is a carbon-centered radical and is best described as a one-electron-reduced Fischer-type carbene. These results clearly underline the general importance of redox noninnocent ligands54 and represent a rare example of the ...
Synthesis of the hexoses
... is that the selectivity for C-l opening by hydroxide is not always complete, and C-3 opening of 1 and C-2 opening of 2 produce two different diastereomers of 3. Not all errant hydroxide openings are a problem, however; for example the C-2 opening of 1 also gives 3. The modification of this process s ...
... is that the selectivity for C-l opening by hydroxide is not always complete, and C-3 opening of 1 and C-2 opening of 2 produce two different diastereomers of 3. Not all errant hydroxide openings are a problem, however; for example the C-2 opening of 1 also gives 3. The modification of this process s ...
stereochemistry of internucleotide bond formation by the h
... stereoselectivity during condensing agents-promoted formation of an internucleotidic bond1,2. The activation of ribonucleoside H-phosphonates of type 1 with pivaloyl chloride yields two diastereomers (A and B, Fig. 1) of mixed anhydrides 2. These isomers have to exist in a rapid equilibrium to regen ...
... stereoselectivity during condensing agents-promoted formation of an internucleotidic bond1,2. The activation of ribonucleoside H-phosphonates of type 1 with pivaloyl chloride yields two diastereomers (A and B, Fig. 1) of mixed anhydrides 2. These isomers have to exist in a rapid equilibrium to regen ...
Preparation of Cyclic Urethanes from Amino Alcohols and Carbon
... alternative solvents in organic synthesis because they possess unique advantages of negligible vapour pressure, a broad range of room temperature liquid compositions, excellent thermal and chemical stabilities, interesting tunable physicochemical characteristics, and selective dissolvability to many ...
... alternative solvents in organic synthesis because they possess unique advantages of negligible vapour pressure, a broad range of room temperature liquid compositions, excellent thermal and chemical stabilities, interesting tunable physicochemical characteristics, and selective dissolvability to many ...
Chapter 22 and 23 Study Guide
... You should review homework, quizzes and other assignments for complete test preparation. These questions are only examples. Different chemicals will be on the test. ...
... You should review homework, quizzes and other assignments for complete test preparation. These questions are only examples. Different chemicals will be on the test. ...
Arginine- or Lysine-catalyzed Michael Addition of Nitromethane to α
... addition of nitroalkanes provide a variety of key building blocks for various compounds, such as an amine, ketone, alkane, and alkene.4 The most widely studied amino acid as a catalyst is proline. The reaction mechanisms of the proline-catalyzed reactions with carbonyl compounds are mainly involved ...
... addition of nitroalkanes provide a variety of key building blocks for various compounds, such as an amine, ketone, alkane, and alkene.4 The most widely studied amino acid as a catalyst is proline. The reaction mechanisms of the proline-catalyzed reactions with carbonyl compounds are mainly involved ...
ation in Cytochrome P-450-Catalyzed Reactions
... competing process is involved.4,5 These results led to new mechanistic proposals for P-450-catalyzed hydroxylations that invoke some type of competition in the hydroxylation reaction or immediately after the hydroxylation event.4,6,7 Recent studies with two P-450 enzymes and their mutants lacking th ...
... competing process is involved.4,5 These results led to new mechanistic proposals for P-450-catalyzed hydroxylations that invoke some type of competition in the hydroxylation reaction or immediately after the hydroxylation event.4,6,7 Recent studies with two P-450 enzymes and their mutants lacking th ...
Microsoft Word - Open Access Repository of Indian Theses
... Readily accessible l-tartaric acid was chosen as the starting material and cyclised into bis-dioxolanone with paraformaldehyde in the presence of Cat. PTSA. Bis-dioxolanone was subjected to Wittig reaction yielding to bis-, unsaturated ester, which was resulted into the targeted bis-dihydrofuranon ...
... Readily accessible l-tartaric acid was chosen as the starting material and cyclised into bis-dioxolanone with paraformaldehyde in the presence of Cat. PTSA. Bis-dioxolanone was subjected to Wittig reaction yielding to bis-, unsaturated ester, which was resulted into the targeted bis-dihydrofuranon ...
metal-catalyzed cross-coupling reactoins
... transition metals for cross-coupling reactions.7 The rate, yield, and scope of palladium-catalyzed crosscoupling reactions are influenced by both the reaction partners and the choice of ligands, allowing for a wide substrate scope through judicious choice of these parameters. Historically, palladiu ...
... transition metals for cross-coupling reactions.7 The rate, yield, and scope of palladium-catalyzed crosscoupling reactions are influenced by both the reaction partners and the choice of ligands, allowing for a wide substrate scope through judicious choice of these parameters. Historically, palladiu ...
Chapter 19 - people.vcu.edu
... nitrogen, changing them from R to S. There are two times when chirality is locked. Quaternary ammonium salts Sometimes sterics can prevent the lone pair from flipping. Physical properties o Strongly polar o Can hydrogen-bond if they are 1° or 2° Remember that the hydrogen bonding of nitrogen ...
... nitrogen, changing them from R to S. There are two times when chirality is locked. Quaternary ammonium salts Sometimes sterics can prevent the lone pair from flipping. Physical properties o Strongly polar o Can hydrogen-bond if they are 1° or 2° Remember that the hydrogen bonding of nitrogen ...
Alcohols, Diols, and Thiols
... The most obvious way to reduce an aldehyde or a ketone to an alcohol is by hydrogenation of the carbon–oxygen double bond. Like the hydrogenation of alkenes, the reaction is exothermic but exceedingly slow in the absence of a catalyst. Finely divided metals such as platinum, palladium, nickel, and r ...
... The most obvious way to reduce an aldehyde or a ketone to an alcohol is by hydrogenation of the carbon–oxygen double bond. Like the hydrogenation of alkenes, the reaction is exothermic but exceedingly slow in the absence of a catalyst. Finely divided metals such as platinum, palladium, nickel, and r ...
CHAPTER 1 Synthesis of amides using Lewis acid catalyst: Iodine
... prepared by reacting ammonia or amines with acid chlorides, anhydrides, or esters. Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids. Amides are commonly synthesized via reactions of a carboxylic acid with an amine. ...
... prepared by reacting ammonia or amines with acid chlorides, anhydrides, or esters. Secondary and tertiary amides are prepared by reacting primary amides or nitriles with organic acids. Amides are commonly synthesized via reactions of a carboxylic acid with an amine. ...
Alkene
In organic chemistry, an alkene is an unsaturated hydrocarbon that contains at least one carbon–carbon double bond. Alkene, olefin, and olefine are used often interchangeably (see nomenclature section below). Acyclic alkenes, with only one double bond and no other functional groups, known as mono-enes, form a homologous series of hydrocarbons with the general formula CnH2n. Alkenes have two hydrogen atoms less than the corresponding alkane (with the same number of carbon atoms). The simplest alkene, ethylene (C2H4), which has the International Union of Pure and Applied Chemistry (IUPAC) name ethene is the organic compound produced on the largest scale industrially. Aromatic compounds are often drawn as cyclic alkenes, but their structure and properties are different and they are not considered to be alkenes.