ppt
... The Wittig reaction is highly selective for ketones and aldehydes; esters, lactones, nitriles and amides will not react but are tolerated in the substrate. Acidic groups (alcohols, amine and carboxylic acids) are not tolerated. O O ...
... The Wittig reaction is highly selective for ketones and aldehydes; esters, lactones, nitriles and amides will not react but are tolerated in the substrate. Acidic groups (alcohols, amine and carboxylic acids) are not tolerated. O O ...
Organic Chemistry Lecture Outline Chapter 21: Carboxylic Acid
... b. Secondary and tertiary amides are named as "N-alkyl-" or "N,N-dialkyl-" amides. The parent is determined as for primary amides. ...
... b. Secondary and tertiary amides are named as "N-alkyl-" or "N,N-dialkyl-" amides. The parent is determined as for primary amides. ...
Chemistry - WordPress.com
... 65. In the assay of ephedrine HCl, we dissolve in water, add a reagent X, filter then extract with methylene chloride, what is the reagent X: a. 0.1 N NaOH (or Na2CO3) 66. Perchloric acid is stronger than acetic acid because: a. Acetic acid is more basic ??? 67. Codeine phosphate is dissolved in ace ...
... 65. In the assay of ephedrine HCl, we dissolve in water, add a reagent X, filter then extract with methylene chloride, what is the reagent X: a. 0.1 N NaOH (or Na2CO3) 66. Perchloric acid is stronger than acetic acid because: a. Acetic acid is more basic ??? 67. Codeine phosphate is dissolved in ace ...
Question paper - Edexcel
... alcohol with sodium chloride or bromide, in the presence of 50% aqueous sulfuric acid. Iodoalkanes cannot be made from sodium iodide and sulfuric acid; red phosphorus and iodine can be used instead as the halogenating agent. (a) (i) What would you see if concentrated sulfuric acid was added to solid ...
... alcohol with sodium chloride or bromide, in the presence of 50% aqueous sulfuric acid. Iodoalkanes cannot be made from sodium iodide and sulfuric acid; red phosphorus and iodine can be used instead as the halogenating agent. (a) (i) What would you see if concentrated sulfuric acid was added to solid ...
Spring 2001 Key
... e. This is an example of a reaction where the energy of chemical bonds is converted to heat. -----------------------------------------------------------------------------------------------------------(d) is a false statement: production of 6 moles of CO2 will produce 4440 kJ of heat. The reaction is ...
... e. This is an example of a reaction where the energy of chemical bonds is converted to heat. -----------------------------------------------------------------------------------------------------------(d) is a false statement: production of 6 moles of CO2 will produce 4440 kJ of heat. The reaction is ...
Title Carbonyl reduction with CaH2 and R3SiCl catalyzed by ZnCl2
... In summary, we have demonstrated that CaH2/silyl chloride reduced carbonyl compounds in the presence of a catalytic amount of zinc salt.12 The cat. ZnX2/CaH2/R3SiCl system developed here is more general for carbonyl reduction than ...
... In summary, we have demonstrated that CaH2/silyl chloride reduced carbonyl compounds in the presence of a catalytic amount of zinc salt.12 The cat. ZnX2/CaH2/R3SiCl system developed here is more general for carbonyl reduction than ...
Mechanism
... the course of the reaction. Aside from the reversibility of the reaction (Retro-Henry) which could prevent the reaction from proceeding, the β-nitro alcohol has the potential to undergo dehydration, and for sterically hindered substrates it is possible that a base catalyzed selfcondensation (Canniza ...
... the course of the reaction. Aside from the reversibility of the reaction (Retro-Henry) which could prevent the reaction from proceeding, the β-nitro alcohol has the potential to undergo dehydration, and for sterically hindered substrates it is possible that a base catalyzed selfcondensation (Canniza ...
name Page 1 of 6 Multiple Choice. Choose the best answer for the
... Which of the following statements concerning a carbocation is not true? (a) (b) (c) (d) (e) ...
... Which of the following statements concerning a carbocation is not true? (a) (b) (c) (d) (e) ...
This is the first exam with targeted syntheses that you
... Most of the reactions of aldehydes and ketones in these chapters are nucleophilic addition reactions. The oxygen in C=O polarizes the bond. Therefore, while electrophilic addition (electrophile first, followed by nucleophile) was favored for the comparatively non-polar, electron-rich alkene, carbony ...
... Most of the reactions of aldehydes and ketones in these chapters are nucleophilic addition reactions. The oxygen in C=O polarizes the bond. Therefore, while electrophilic addition (electrophile first, followed by nucleophile) was favored for the comparatively non-polar, electron-rich alkene, carbony ...
Question paper - Edexcel
... Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on this section. For each question, select one answer from A to D and put a cross in the box . and then mark your new answer with If you change your mind, put a line through the box a cross . 1 Methods for inve ...
... Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on this section. For each question, select one answer from A to D and put a cross in the box . and then mark your new answer with If you change your mind, put a line through the box a cross . 1 Methods for inve ...
Eötvös Loránd Science University
... Preparation of acid chlorides and anhydrides. 8. lecture (Week 9) Halogenation of -carbon atom. Reactivity of halogenated acids. Carboxylic acid derivatives - Structure of carboxylic acid derivatives (acid chlorides, anhydrides, esters, amides, nitriles). Important acid derivatives. Chemical prope ...
... Preparation of acid chlorides and anhydrides. 8. lecture (Week 9) Halogenation of -carbon atom. Reactivity of halogenated acids. Carboxylic acid derivatives - Structure of carboxylic acid derivatives (acid chlorides, anhydrides, esters, amides, nitriles). Important acid derivatives. Chemical prope ...
Efficient and catalyst-free condensation of acid chlorides and
... An efficient and catalyst-free procedure for the condensation of acyl chlorides and alcohols using continuous flow was developed. Different esters could be obtained with excellent conversions starting from the corresponding acyl chlorides and alcohols in very short reaction times (5-6.7 min). The re ...
... An efficient and catalyst-free procedure for the condensation of acyl chlorides and alcohols using continuous flow was developed. Different esters could be obtained with excellent conversions starting from the corresponding acyl chlorides and alcohols in very short reaction times (5-6.7 min). The re ...
Molecules Most important molecules are based on carbon. Carbon
... Chains of amino acids are also called “polypeptides” A protein may have more than one polypeptide. All amino acids have a “carboxyl” group (hence “acid”), and an amino group [OVERHEAD, fig. 3.11A, p. 42]. The peptide bond forms between a carboxyl group and an amino group [OVERHEAD, fig. 3.11C, p. 43 ...
... Chains of amino acids are also called “polypeptides” A protein may have more than one polypeptide. All amino acids have a “carboxyl” group (hence “acid”), and an amino group [OVERHEAD, fig. 3.11A, p. 42]. The peptide bond forms between a carboxyl group and an amino group [OVERHEAD, fig. 3.11C, p. 43 ...
CARBOXYLIC ACIDS AND CARBOXYLATE SALTS Carboxylic
... carboxylic acid will give a sweet smell if heated with ethanol and a strong acid, and an alcohol will give a sweet smell if heated with ethanoic acid and a strong acid. Esters are also used as plasticizers. They can be added to polymers to make them less rigid and more flexible. Plasticiser molecule ...
... carboxylic acid will give a sweet smell if heated with ethanol and a strong acid, and an alcohol will give a sweet smell if heated with ethanoic acid and a strong acid. Esters are also used as plasticizers. They can be added to polymers to make them less rigid and more flexible. Plasticiser molecule ...
Esterification
... plate, spatula, dropper bottles, 0rganic acids ( acetic acid (ethanoic acid), butyric acid (butanoic acid), salicyclic acid), Organic alcohols ( isopentyl alcohol, n- octyl alcohol, methyl alcohol, ethyl alcohol), sulfuric acid . Procedure: 1. Organize the test tubes according to the data table and ...
... plate, spatula, dropper bottles, 0rganic acids ( acetic acid (ethanoic acid), butyric acid (butanoic acid), salicyclic acid), Organic alcohols ( isopentyl alcohol, n- octyl alcohol, methyl alcohol, ethyl alcohol), sulfuric acid . Procedure: 1. Organize the test tubes according to the data table and ...
Halogenoalkanes
... Light of the right frequency (UV) can split the C-X bond by homolytic fission, creating very reactive radicals. ...
... Light of the right frequency (UV) can split the C-X bond by homolytic fission, creating very reactive radicals. ...
Full answers
... to represent atomic orbitals, account for this property in compounds of Co2+. Co2+ has a 3d7 configuration: ...
... to represent atomic orbitals, account for this property in compounds of Co2+. Co2+ has a 3d7 configuration: ...
spring semester review
... Ni(s) + 4CO(g) <--> Ni(CO)4(g) The reaction is exothermic. For each of the following questions #6-12, how would the following changes affect the above reaction if it is at equilibrium? Use the answer choices below: (a) Shifts right (b) shifts left (c) no change (d) can’t tell from the information gi ...
... Ni(s) + 4CO(g) <--> Ni(CO)4(g) The reaction is exothermic. For each of the following questions #6-12, how would the following changes affect the above reaction if it is at equilibrium? Use the answer choices below: (a) Shifts right (b) shifts left (c) no change (d) can’t tell from the information gi ...
Chapter 19 Carboxylic Acids
... equilibrium lies far to the right; K is ~ 1011 as long as the molecular weight of the acid is not too high, sodium and potassium carboxylate salts are soluble in water ...
... equilibrium lies far to the right; K is ~ 1011 as long as the molecular weight of the acid is not too high, sodium and potassium carboxylate salts are soluble in water ...
IB Chemistry HL Assessment Statements 2009 Revised
... Include the identification of the repeating unit. ...
... Include the identification of the repeating unit. ...
Option G Further Organic Chemistry
... The compounds and reaction types in this option at SL are summarized in the following ...
... The compounds and reaction types in this option at SL are summarized in the following ...
2. ACTIVATION OF CARBOXYL GROUPS IN
... is very selective and highly efficient, especially when it is carried out under homogeneous conditions and even when the group is attached to a polymer. ...
... is very selective and highly efficient, especially when it is carried out under homogeneous conditions and even when the group is attached to a polymer. ...
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.