• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Lecture - Ch 24
Lecture - Ch 24

... • Unsymmetrically substituted secondary and tertiary amines – Named as N-substituted primary amines – Largest alkyl group is the parent name, and other alkyl groups are considered N-substituents ...
992_4th_ Exam_1000615
992_4th_ Exam_1000615

... A) have different chemical properties B) have an asymmetric carbon C) have different physical properties D) rotate polarized light E) change the color of light Answer: D 39) Cellulose and starch are both polymers of glucose units, but most animals can only use starch as a source of carbohydrate in t ...
Experimental Study of Closed System in the Chlorine Dioxide
Experimental Study of Closed System in the Chlorine Dioxide

... citric acid solution. Sulfuric acid: 0.05 mol/L. All other chemicals were the highest purity commercially available and were used as received. 2.2. Methods. The reaction was started by injecting a small volume of one of the reactants into a mixture containing the other components in a spectrophotome ...
Chapter-1 ALCOHOLS
Chapter-1 ALCOHOLS

... carbonyl compounds. The choice of carbonyl type (ketone, aldehyde, ester, etc) and the type of reaction (Grignard addition or Reduction), will determine the product(s) you will get. There are primarily two types of reactions used to create alcohols from carbonyls: Grignard Addition reactions and Red ...
Nucleophilic Aromatic Substitution, General Corrected Mechanism
Nucleophilic Aromatic Substitution, General Corrected Mechanism

View/Open - AURA - Alfred University
View/Open - AURA - Alfred University

... that triflic acid is not responsible for the progress of the reaction, suggests that PEDOT can mediate the Ritter reaction under mild conditions and it may now be possible to use unprotected, acid-sensitive functional groups. In an attempt to determine the scope of the PEDOT-mediated Ritter reactio ...
Synthesis of Amide Bond Isosteres Incorporated
Synthesis of Amide Bond Isosteres Incorporated

18.10 CONJUGATE ADDITIONS
18.10 CONJUGATE ADDITIONS

... The overall result of a conjugate addition is the addition of a proton and a nucleophile to the CC double bond. However, this reaction differs greatly from the additions discussed in Chapter 11, in which the electrophile adds first. Here, the nucleophile adds in the first step. This reaction does no ...
Chapter 11: macromolecules
Chapter 11: macromolecules

Assignment 1
Assignment 1

... known concentration is added from a burette, with the pH being recorded. The endpoint is identified from the change in the shape of the pH curve. We need the equation for the reaction between the weak base and the strong acid, as this gives the stoichiometry of the reaction. The number of moles of a ...
INTRODUCING ALDEHYDES AND KETONES
INTRODUCING ALDEHYDES AND KETONES

... carbonyl group undergoes addition reactions, often followed by the loss of a water molecule. This gives a reaction known as addition-elimination or condensation Where aldehydes and ketones differ An aldehyde differs from a ketone by having a hydrogen atom attached to the carbonyl group. This makes t ...
Chem 2423-Test 2 - HCC Learning Web
Chem 2423-Test 2 - HCC Learning Web

... 17. The transition state is found at point _____ on the diagram. 18. The products are found at point _____ on the diagram. 19. The free-energy change for the reaction is indicated at point _____ on the diagram. 20. The reactants are found at point _____ on the diagram. ...
Solid-Phase Organic Synthesis: Creation of Carbon
Solid-Phase Organic Synthesis: Creation of Carbon

... HPLC analyses of products released by acidolysis (Table I, lines 1, 2, 4, and 5). However, corresponding reactions when using ketone-containing substrates in place of aldehydes were sluggish or did not occur at all (>95% of starting material recovered). The more reactive species derived from treatme ...
alcohols
alcohols

... ORGANIC CHEMISTRY A Study Guide for alcohols, ethers, aldehydes, ketones, carboxylic acids, esters, amines and polymers ALCOHOLS Alcohols are characterized by the hydroxyl functional group and have the general formula R-OH. Alcohols are classified into three categories. If the hydroxyl group is bond ...
Alcohols, Phenols and Ethers
Alcohols, Phenols and Ethers

... water. The reaction with R’ COCI is carried out in the presence of pyridine so as to neutralise HCI which is formed during the reaction. The introduction of acetyl (CH3CO-) group in phenols is known as acetylation. Acetylation of salicylic acid produces aspirin. ...
more aromatic chemistry
more aromatic chemistry

... Acidity of Phenols • Phenols and alcohols both contain hydroxyl groups however they are classified as separate functional groups. • Phenols have different properties than alcohols, most noteworthy is their acidity (pKa difference of 106) ...
alkene structure, naming, stereochemistry & preparation
alkene structure, naming, stereochemistry & preparation

... [7.8] Macroscopic physical properties of alkenes - Lower alkenes (C2 to C5) are gases @ R.T. - Boiling point increases with C- number - Boiling point within the same size alkenes decreases with branching (same as alkanes) - Less dense than water (Gulf oil slick!); mixes poorly or not at all with wa ...
32. The reaction described by this equilibrium is
32. The reaction described by this equilibrium is

... Dr. Richard Trotter has developed what could be the first cost-effective process for limiting methane emissions from underground coal mines. In this process, methane and oxygen are reacted at 800°C in the presence of a catalyst. The products of this process are carbon dioxide gas and liquid water. ...
Substituted Hydrocarbons and Their Reactions
Substituted Hydrocarbons and Their Reactions

... (–OH). An organic compound in which a hydroxyl group replaces a hydrogen atom of a hydrocarbon is called an alcohol. As shown in Table 4, the general formula for an alcohol is ROH. Table 4 also illustrates the relationship of the simplest alkane, methane, to the simplest alcohol, methanol. Ethanol a ...
Chapter 20: Carboxylic Acids and Nitriles
Chapter 20: Carboxylic Acids and Nitriles

... near 2250 cm1 for saturated compounds and 2230 cm1 for aromatic and conjugated molecules  Highly diagnostic for nitriles ...
CHAPTER 20 CARBOXYLIC ACIDS Organic Chemistry
CHAPTER 20 CARBOXYLIC ACIDS Organic Chemistry

... 1- Oxidation of arenes Oxidation of a substituted alkylbenzene with KMnO4 or Na2Cr2O7 or H2Cr2O7 gives a substituted benzoic acid (see Section 16.10) 1° and 2° alkyl groups can be oxidized, but tertiary groups are not ( the alkylbenzene must contain at least one benzylic hydrogen atom. Therefore, ...
Recent Developments on the Mechanism and Kinetics
Recent Developments on the Mechanism and Kinetics

... developed to represent the kinetic behaviors of esterification, such as simple orders or the power-law model, the pseudo-homogeneous model, the L-H model, the E-R model, etc. Herein, we review the mechanisms of esterification catalyzed by inorganic acid, Lewis acid, metallic compounds, solid acids, ...
Chapter 23 - Simpson County Schools
Chapter 23 - Simpson County Schools

... Extremely important to carbohydrate chemistry due to nearly all carbohydrates are found as ringed molecules because they form intramolecular hemiacetals or hemiketals. The acetal/ketal reaction provides the means by which carbohydrates link together to form the wellknown carbohydrate polymers such a ...
using hydrogen as a nucleophile in hydride reductions
using hydrogen as a nucleophile in hydride reductions

... process is formation of the corresponding carbonyl compound (aldehyde or ketone), which may or may not undergo further reduction to alcohol, depending on the nature of the reagents used and reaction conditions. The following mechanism illustrates this concept. For simplicity, only the hydride ion is ...
Mechanism of the oxymercuration of substituted cyclohexenes
Mechanism of the oxymercuration of substituted cyclohexenes

... Abstract : The stereochemistry of the oxymercuration of 4-tert-butylcyclohexene (5) and 1-methyl-Ctert-butylcyclohexene (6)has been determined, and has been shown to give exclusively trans-diaxial products. The stereochemistry of the bromination and methoxybromination, both of which proceed uiu cycl ...
< 1 ... 31 32 33 34 35 36 37 38 39 ... 157 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report