Chem 322 Exam 2 April 16, 2012 /100 Name Please do the easiest
... a. (3) What path is followed during attack on 2-butanone? Show the mechanism. Grignard adds to carbonyl C forcing one pair of electrons from the C=O to the O, making it a C–O-. There is no good leaving group on the former C=O. b. (3) What path is followed during attack on propanoyl chloride? Show th ...
... a. (3) What path is followed during attack on 2-butanone? Show the mechanism. Grignard adds to carbonyl C forcing one pair of electrons from the C=O to the O, making it a C–O-. There is no good leaving group on the former C=O. b. (3) What path is followed during attack on propanoyl chloride? Show th ...
Chapter 20 Carboxylic Acids - chemistry
... • An activated form of the carboxylic acid. • Chloride is a good leaving group, so undergoes acyl substitution easily. • To synthesize acid chlorides use thionyl chloride or oxalyl chloride with the acid. O ...
... • An activated form of the carboxylic acid. • Chloride is a good leaving group, so undergoes acyl substitution easily. • To synthesize acid chlorides use thionyl chloride or oxalyl chloride with the acid. O ...
Organic Reactions
... Amide formation (elimination) • Carboxylic acid + amine amide + water • Reaction condition: difficult to conduct in simple steps since amine (a base) and acid basically neutralize each other. To form amide, other reactions that “protect” important function groups are required • The OH group on th ...
... Amide formation (elimination) • Carboxylic acid + amine amide + water • Reaction condition: difficult to conduct in simple steps since amine (a base) and acid basically neutralize each other. To form amide, other reactions that “protect” important function groups are required • The OH group on th ...
Discussion Worksheet #10 Formation of Alcohols Skill 1: Functional
... Alcohols can be made through addition, substitution or elimination mechanisms There are ways to control regiochemistry and stereochemistry with alcohol formation ...
... Alcohols can be made through addition, substitution or elimination mechanisms There are ways to control regiochemistry and stereochemistry with alcohol formation ...
Exam 2
... Org II exam, p.2 Section A (48 points, 4 each – answer 12 of the 13 questions, marking clearly the one you choose to omit; if none is marked, the last answer will be omitted) Give the major organic product(s) of the following reactions, including stereochemistry if appropriate. ...
... Org II exam, p.2 Section A (48 points, 4 each – answer 12 of the 13 questions, marking clearly the one you choose to omit; if none is marked, the last answer will be omitted) Give the major organic product(s) of the following reactions, including stereochemistry if appropriate. ...
3.4.3 Corrosives Corrosive materials are those that cause visible
... 3.4.3 Corrosives Corrosive materials are those that cause visible destruction of, or irreversible alterations in, living tissue by chemical action at the site of contact. Corrosives are most commonly acids and alkalis, but many other materials can be severely damaging. Strong oxidizing materials can ...
... 3.4.3 Corrosives Corrosive materials are those that cause visible destruction of, or irreversible alterations in, living tissue by chemical action at the site of contact. Corrosives are most commonly acids and alkalis, but many other materials can be severely damaging. Strong oxidizing materials can ...
Self Test Question - University of Illinois at Chicago
... There are a number of structural features which effect the pKa of an acid: a) Electronegativity; b) The strength of the bond to the acidic hydrogen atom; c) Inductive effects; d) Resonance delocalization in conjugate base. Remember that the ionization of an acids (HA) to a proton (H+) and conjugate ...
... There are a number of structural features which effect the pKa of an acid: a) Electronegativity; b) The strength of the bond to the acidic hydrogen atom; c) Inductive effects; d) Resonance delocalization in conjugate base. Remember that the ionization of an acids (HA) to a proton (H+) and conjugate ...
Answer Key - OISE-IS-Chemistry-2011-2012
... 19. Write the reaction showing how the ester below can be prepared from a carboxylic acid and an alcohol. Provide the names of all reactants and any other products, below your equation. [6 marks] ...
... 19. Write the reaction showing how the ester below can be prepared from a carboxylic acid and an alcohol. Provide the names of all reactants and any other products, below your equation. [6 marks] ...
Aldehydes and Ketones
... Generally, the hemiacetals and acetals are only a minor component of an equilibrium mixture. In order to favor formation of acetals the carbonyl compound and alcohol is reacted with acid in the absence of water. Dry HCl) The acetals or hemiacetals maybe converted back to the carbonyl compound by tre ...
... Generally, the hemiacetals and acetals are only a minor component of an equilibrium mixture. In order to favor formation of acetals the carbonyl compound and alcohol is reacted with acid in the absence of water. Dry HCl) The acetals or hemiacetals maybe converted back to the carbonyl compound by tre ...
Chemistry Project on Carboxyl Acids
... the other hand, esters of carboxylic acids tend to have pleasant odours and many are used in perfumes. * Occurrence* ...
... the other hand, esters of carboxylic acids tend to have pleasant odours and many are used in perfumes. * Occurrence* ...
Exam 1
... As mentioned in the text, diethyl ether, pentane, and 1-butanol have similar molar masses, but different physical properties. Boiling points are 35oC, 36oC, and 117oC, respectively. Their respective solubilities in water are 7.5g/100mL, insoluble, and 9g/100mL. (i) Draw structures for each of these ...
... As mentioned in the text, diethyl ether, pentane, and 1-butanol have similar molar masses, but different physical properties. Boiling points are 35oC, 36oC, and 117oC, respectively. Their respective solubilities in water are 7.5g/100mL, insoluble, and 9g/100mL. (i) Draw structures for each of these ...
102 Lab 7 Esters Fall05
... the odors and flavors of fruits and flowers. Most odors and flavors are the result of a complex mixture, with one ester predominating. Because esters are easy to synthesize, flavor chemists often use esters, either one or several, to reproduce or enhance natural flavors. The table on the next page s ...
... the odors and flavors of fruits and flowers. Most odors and flavors are the result of a complex mixture, with one ester predominating. Because esters are easy to synthesize, flavor chemists often use esters, either one or several, to reproduce or enhance natural flavors. The table on the next page s ...
CHEM 203 Topics Discussed on Nov. 25 Toxic and carcinogenic
... IMPORTANT: PCC is used ONLY in anhydrous (=water-free) media, while Jones rgt. is an aqueous solution. This seemingly minor difference has a major influence on the course of the reaction of primary alcohols with the two reagents. The Jones reagent: oxidation of primary alcohols to carboxylic acids a ...
... IMPORTANT: PCC is used ONLY in anhydrous (=water-free) media, while Jones rgt. is an aqueous solution. This seemingly minor difference has a major influence on the course of the reaction of primary alcohols with the two reagents. The Jones reagent: oxidation of primary alcohols to carboxylic acids a ...
Tentative exam questions Food Chemistry - e
... 1. Define the ω-3 and ω-3 fatty acids. 2. Why the lipids are hydrogenated and what is the drawback of the process? 3. Which fatty acids have the higher melting point – the saturated or unsaturated? 4. Acylglycerols are : a). ethers of isoprene; b). esters of fatty acids and glycerol; c). esters of f ...
... 1. Define the ω-3 and ω-3 fatty acids. 2. Why the lipids are hydrogenated and what is the drawback of the process? 3. Which fatty acids have the higher melting point – the saturated or unsaturated? 4. Acylglycerols are : a). ethers of isoprene; b). esters of fatty acids and glycerol; c). esters of f ...
Unit Two : Carbon Compounds
... make acid rain. Carbon dioxide is also acidic and slightly soluble in water. Nitrogen dioxide is formed by an electrical spark in a car engine or lightning storms in air. This also contributes to acid rain. Crude oil is a mixture of compounds, mainly hydrocarbons. A hydrocarbon is a compound which c ...
... make acid rain. Carbon dioxide is also acidic and slightly soluble in water. Nitrogen dioxide is formed by an electrical spark in a car engine or lightning storms in air. This also contributes to acid rain. Crude oil is a mixture of compounds, mainly hydrocarbons. A hydrocarbon is a compound which c ...
10.5 Carbonyl Compounds (a) describe: (i) the
... (i) the formation of aldehydes and ketones from primary and secondary alcohols respectively using Cr2O72-/H+ (ii) the reduction of aldehydes and ketones e.g. using NaBH4 (b) describe the mechanism of nucleophilic addition reactions of hydrogen cyanide with aldehydes and ketones (c) describe the use ...
... (i) the formation of aldehydes and ketones from primary and secondary alcohols respectively using Cr2O72-/H+ (ii) the reduction of aldehydes and ketones e.g. using NaBH4 (b) describe the mechanism of nucleophilic addition reactions of hydrogen cyanide with aldehydes and ketones (c) describe the use ...
Carboxylic Acids and Esters
... CARBOXYLIC ACIDS Carboxylic acids are organic compounds that contain the carboxyl group (COOH). The carboxyl group is always on a terminal carbon atom. Carboxylic acids are weak acids, since only a small fraction of acid molecules ionize when dissolved in water. They give up the hydrogen on the car ...
... CARBOXYLIC ACIDS Carboxylic acids are organic compounds that contain the carboxyl group (COOH). The carboxyl group is always on a terminal carbon atom. Carboxylic acids are weak acids, since only a small fraction of acid molecules ionize when dissolved in water. They give up the hydrogen on the car ...
The term “Chromic Acid” actually refers to a collection of compounds
... contain the chromate ion, CrO42-, and have an intense yellow color. Dichromate salts contain the dichromate ion, Cr2O72−, and have an intense orange color. Potassium dichromate, K2Cr2O7, is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and indust ...
... contain the chromate ion, CrO42-, and have an intense yellow color. Dichromate salts contain the dichromate ion, Cr2O72−, and have an intense orange color. Potassium dichromate, K2Cr2O7, is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and indust ...
Synthesis, Isolation and Purification of an Ester
... Opportunities for Inquiry The synthesis of ethyl acetate reinforces knowledge of limiting and excess reactants and demonstrates classic techniques for the separation of a mixture and product purification. These learning objectives provide a framework for adapting the experiment to an inquiry-based l ...
... Opportunities for Inquiry The synthesis of ethyl acetate reinforces knowledge of limiting and excess reactants and demonstrates classic techniques for the separation of a mixture and product purification. These learning objectives provide a framework for adapting the experiment to an inquiry-based l ...
Overview of the Reactions of Carbonyl Compounds
... • Friedel–Crafts acylation of an aromatic ring with an acid chloride in the presence of AlCl3 catalyst (see Section 5.6) ...
... • Friedel–Crafts acylation of an aromatic ring with an acid chloride in the presence of AlCl3 catalyst (see Section 5.6) ...
SYNOPSIS OF CHEMISTRY
... 16. Aldehydes and ketones. Making aldehydes and ketones. Simple addition to aldehydes and ketone – the nucleophilic addition of hydrogen cyanide, sodium hydrogensulphite, ammonia, hydrazine, hydroxylamine and water. 17. Aldehydes and ketones. Reduction and oxidation of aldehydes and ketones. 18. Add ...
... 16. Aldehydes and ketones. Making aldehydes and ketones. Simple addition to aldehydes and ketone – the nucleophilic addition of hydrogen cyanide, sodium hydrogensulphite, ammonia, hydrazine, hydroxylamine and water. 17. Aldehydes and ketones. Reduction and oxidation of aldehydes and ketones. 18. Add ...
Level 3: Organics Part I
... Making soap Soaps are the sodium salts of fatty acids (long chain acids). These salts are soluble in water as they are ionised, but they have a carbon chain end that is soluble in fats and oils. This allows them to dissolve and break down dirt. Sodium laurate is the name of the soap molecule made f ...
... Making soap Soaps are the sodium salts of fatty acids (long chain acids). These salts are soluble in water as they are ionised, but they have a carbon chain end that is soluble in fats and oils. This allows them to dissolve and break down dirt. Sodium laurate is the name of the soap molecule made f ...
Addition reactions
... Tertiary alcohols are not easily oxidised because, unlike primary and secondary alcohols, they do not have a hydrogen attached to the same carbon atom as the hydroxyl group. Of course, the opposite of oxidation is reduction and the previous two examples can also go in reverse: Example: reduction of ...
... Tertiary alcohols are not easily oxidised because, unlike primary and secondary alcohols, they do not have a hydrogen attached to the same carbon atom as the hydroxyl group. Of course, the opposite of oxidation is reduction and the previous two examples can also go in reverse: Example: reduction of ...
Review and New - ChemConnections
... • Treatment of 1-propanol with K2Cr2O7, H2SO4, and heat will produce: ...
... • Treatment of 1-propanol with K2Cr2O7, H2SO4, and heat will produce: ...
Nucleophilic acyl substitution
Nucleophilic acyl substitution describe a class of substitution reactions involving nucleophiles and acyl compounds. In this type of reaction, a nucleophile – such as an alcohol, amine, or enolate – displaces the leaving group of an acyl derivative – such as an acid halide, anhydride, or ester. The resulting product is a carbonyl-containing compound in which the nucleophile has taken the place of the leaving group present in the original acyl derivative. Because acyl derivatives react with a wide variety of nucleophiles, and because the product can depend on the particular type of acyl derivative and nucleophile involved, nucleophilic acyl substitution reactions can be used to synthesize a variety of different products.