n - TU Chemnitz
... α-Azido alcohols derived from aldehydes are not known in literature but postulated to be unstable intermediates in solvolysis reactions. The synthesis starting from α-azidoalkyl trimethylsilyl ethers,[1] geminal diazides[2] or α-azido ethers[3] only led to the corresponding aldehydes but not to α-az ...
... α-Azido alcohols derived from aldehydes are not known in literature but postulated to be unstable intermediates in solvolysis reactions. The synthesis starting from α-azidoalkyl trimethylsilyl ethers,[1] geminal diazides[2] or α-azido ethers[3] only led to the corresponding aldehydes but not to α-az ...
f8560d95306293b
... Reaction of Ethers with Strong Acid • In order for ethers to undergo substitution or elimination reactions, their poor leaving group must first be converted into a good leaving group by reaction with strong acids such as HBr and HI. • HBr and HI are strong acids that are also sources of good nucleo ...
... Reaction of Ethers with Strong Acid • In order for ethers to undergo substitution or elimination reactions, their poor leaving group must first be converted into a good leaving group by reaction with strong acids such as HBr and HI. • HBr and HI are strong acids that are also sources of good nucleo ...
C6_rev - boswellsrcd
... C6.1 Chemicals are why we need them Chemical synthesis: chemical reactions and processes used to get a desired product using starting materials called reagents. The products can be useful for a variety of purposes but tend to be either… ...
... C6.1 Chemicals are why we need them Chemical synthesis: chemical reactions and processes used to get a desired product using starting materials called reagents. The products can be useful for a variety of purposes but tend to be either… ...
C h e m g u id e –... ACID ANHYDRIDES: REACTIONS WITH WATER, ALCOHOLS AND PHENOLS
... and so the top group in your target molecule must come from an acid anhydride, but a bigger one than ethanoic anhydride. You can ignore the other group on the ring as just a distraction. You haven’t come across any reaction which would attach a group like this to a benzene ring, so it must have been ...
... and so the top group in your target molecule must come from an acid anhydride, but a bigger one than ethanoic anhydride. You can ignore the other group on the ring as just a distraction. You haven’t come across any reaction which would attach a group like this to a benzene ring, so it must have been ...
Esters, fats and oils
... Esters have characteristic smells making them useful as flavourings and fragrances. ...
... Esters have characteristic smells making them useful as flavourings and fragrances. ...
Question paper - Edexcel
... 16 Two ketones, CH3COCH2CH2CH3 and CH3CH2COCH2CH3, both have Mr = 86. Which peak due to fragmentation into singly charged ions would you expect to be present in the mass spectrum of one but not the other? ...
... 16 Two ketones, CH3COCH2CH2CH3 and CH3CH2COCH2CH3, both have Mr = 86. Which peak due to fragmentation into singly charged ions would you expect to be present in the mass spectrum of one but not the other? ...
Chapter 10
... • Formation of benzenediazonium salt from aniline with HNO2. • Reaction of benzenediazonium salt with various reagents to make substituted benzenes. ...
... • Formation of benzenediazonium salt from aniline with HNO2. • Reaction of benzenediazonium salt with various reagents to make substituted benzenes. ...
Chapter 25. The Chemistry of Life: Organic and Biological Chemistry
... The simplest alkenes are H2C=CH2 (ethene) and CH3CH=CH2 (propene). • Their common names are ethylene and propylene. Alkenes are named in the same way as alkanes with the suffix -ene replacing the -ane in alkanes. • The location of the double bond is indicated by a number. • If a substance has two or ...
... The simplest alkenes are H2C=CH2 (ethene) and CH3CH=CH2 (propene). • Their common names are ethylene and propylene. Alkenes are named in the same way as alkanes with the suffix -ene replacing the -ane in alkanes. • The location of the double bond is indicated by a number. • If a substance has two or ...
doc
... rapidly. This situation is similar to that of alcohols. When the carboxylic acid has a small hydrocarbon “tail” the ability of the carboxyl group to hydrogen bond with water causes the acid to be soluble. As the hydrophobic hydrocarbon tail grows in size, however, the acids become less soluble. As i ...
... rapidly. This situation is similar to that of alcohols. When the carboxylic acid has a small hydrocarbon “tail” the ability of the carboxyl group to hydrogen bond with water causes the acid to be soluble. As the hydrophobic hydrocarbon tail grows in size, however, the acids become less soluble. As i ...
Preparation of a haloalkane
... • Tertiary alcohols are the most easily substituted • Excess acid is removed with sodium carbonate solution • Anhydrous (without water) sodium sulfate is used as a drying agent, to remove water from an organic solution. • Organic reactions seldom go to completion: separate organic mixtures by distil ...
... • Tertiary alcohols are the most easily substituted • Excess acid is removed with sodium carbonate solution • Anhydrous (without water) sodium sulfate is used as a drying agent, to remove water from an organic solution. • Organic reactions seldom go to completion: separate organic mixtures by distil ...
Organic Chemistry I
... 33% p character and are at a lower energy level than the electron pair in the o bond. 33% p character and are at a higher energy level than the electron pair in the o bond. 100% p character and are at a lower energy level than the electron pair in the o bond. 100% p character and are at a higher ene ...
... 33% p character and are at a lower energy level than the electron pair in the o bond. 33% p character and are at a higher energy level than the electron pair in the o bond. 100% p character and are at a lower energy level than the electron pair in the o bond. 100% p character and are at a higher ene ...
Review Sheet Chemistry II Final 2013
... Read summary and see diagram p 539 What speeds up a chemical reaction? Equilibrium, equilibrium constant Dynamic equilibrium, reversible reaction Le Chatlier’s principle Chapter 20 + 21 Acids and Neutralization Acid and base, naming acids and writing formulas for acids and bases Properties of acids ...
... Read summary and see diagram p 539 What speeds up a chemical reaction? Equilibrium, equilibrium constant Dynamic equilibrium, reversible reaction Le Chatlier’s principle Chapter 20 + 21 Acids and Neutralization Acid and base, naming acids and writing formulas for acids and bases Properties of acids ...
Chapter 20: Carboxylic Acids and Nitriles
... transfer a proton to a base to give anions, which are good nucleophiles in SN2 reactions Like ketones, carboxylic acids undergo addition of nucleophiles to the carbonyl group In addition, carboxylic acids undergo other reactions characteristic of neither alcohols nor ketones ...
... transfer a proton to a base to give anions, which are good nucleophiles in SN2 reactions Like ketones, carboxylic acids undergo addition of nucleophiles to the carbonyl group In addition, carboxylic acids undergo other reactions characteristic of neither alcohols nor ketones ...
Survey on Conditions Catalysis of Chemical Reactions
... will reduce aldehydes, ketones, esters, carboxylic acid chlorides, carboxylic acids and even carboxylate salts to alcohols. Amides and nitriles are reduced to amines. In each case the partially negative hydrogen reacts with the partially positive carbon of the substrate. It can also be used to reduc ...
... will reduce aldehydes, ketones, esters, carboxylic acid chlorides, carboxylic acids and even carboxylate salts to alcohols. Amides and nitriles are reduced to amines. In each case the partially negative hydrogen reacts with the partially positive carbon of the substrate. It can also be used to reduc ...
136KB - NZQA
... Two products are formed in this reaction because propene is an asymmetric alkene. When another asymmetric molecule such as hydrogen chloride, HCl, is added to it, there are two possible products. One product is produced in greater quantities (the major product) than the other (minor product). The ru ...
... Two products are formed in this reaction because propene is an asymmetric alkene. When another asymmetric molecule such as hydrogen chloride, HCl, is added to it, there are two possible products. One product is produced in greater quantities (the major product) than the other (minor product). The ru ...
Lecture 28 - The Cook Group @ NDSU
... radicals, generated by the photolysis of NBS, will generate allylic bromides. ...
... radicals, generated by the photolysis of NBS, will generate allylic bromides. ...
Chapter 4 - Colby College Wiki
... Theoretical Yield: The maximum amount of product that can be produced (usually reported in mol or g) Actual Yield: Real (measured) amount of product that was produced/obtained (usually reported in mol or g) ...
... Theoretical Yield: The maximum amount of product that can be produced (usually reported in mol or g) Actual Yield: Real (measured) amount of product that was produced/obtained (usually reported in mol or g) ...
Chapter 17, 18 Lecture
... Catalytic hydrogenation (reduction) or metal hydride reduction of carbonyl compounds. These reactions introduce a very important aspect of the carbonyl group chemistry, a nucleophilic addition to the carbonyl group. In the examples below, this occurs via a hydride anion. This anion is supplied via a ...
... Catalytic hydrogenation (reduction) or metal hydride reduction of carbonyl compounds. These reactions introduce a very important aspect of the carbonyl group chemistry, a nucleophilic addition to the carbonyl group. In the examples below, this occurs via a hydride anion. This anion is supplied via a ...
Petasis reaction
The Petasis reaction (alternatively called the Petasis borono–Mannich (PBM) reaction) is the chemical reaction of an amine, aldehyde, and vinyl- or aryl-boronic acid to form substituted amines.Reported in 1993 by Nicos Petasis as a practical method towards the synthesis of a geometrically pure antifungal agent, naftifine, the Petasis reaction can be described as a variation of the Mannich reaction. Rather than generating an enolate to form the substituted amine product, in the Petasis reaction, the vinyl group of the organoboronic acid serves as the nucleophile. In comparison to other methods of generating allyl amines, the Petasis reaction tolerates a multifunctional scaffold, with a variety of amines and organoboronic acids as potential starting materials. Additionally, the reaction does not require anhydrous or inert conditions. As a mild, selective synthesis, the Petasis reaction is useful in generating α-amino acids, and is utilized in combinatorial chemistry and drug discovery.