Advanced Organic Chemistry: Reactions and synthesisPlenum Press, 1990 - Chemistry, Organic |
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Page 288
... substituents . Adoption of the s - cis conformation of the diene in the transition state brings the cis - oriented 1- and 4 - substituents on the diene close together . trans - 1,3- Pentadiene is 103 times more reactive than 4 - methyl ...
... substituents . Adoption of the s - cis conformation of the diene in the transition state brings the cis - oriented 1- and 4 - substituents on the diene close together . trans - 1,3- Pentadiene is 103 times more reactive than 4 - methyl ...
Page 465
... substituents can also be introduced into alkenes and alkynes by hydrosi- lation.48 This reaction , in contrast to hydroboration , does not occur spontaneously , but it can be carried out in the presence of catalysts , the most common of ...
... substituents can also be introduced into alkenes and alkynes by hydrosi- lation.48 This reaction , in contrast to hydroboration , does not occur spontaneously , but it can be carried out in the presence of catalysts , the most common of ...
Page 546
... substituents ; ( 2 ) alkenes with such substituents exhibit a good degree of regioselectivity , resulting from a combination of steric and radical - stabilizing effects of the substituent . The " nucleophilic " versus " electrophilic ...
... substituents ; ( 2 ) alkenes with such substituents exhibit a good degree of regioselectivity , resulting from a combination of steric and radical - stabilizing effects of the substituent . The " nucleophilic " versus " electrophilic ...
Contents
Alkylation of Nucleophilic Carbon Enolates and Enamines | 1 |
CONTENTS | 3 |
Polar Addition and Elimination Reactions | 6 |
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acetic acyl adduct alcohols aldehydes alkenes alkyl allylic amines anion aromatic aryl boron bromide C=C H C₂H carbanions carbon carbonyl carbonyl compounds carbonyl group carboxylic acids catalyst CH,O CH₂ CH₂OH CH3 CH CHAPTER 6 CYCLOADDITIONS Chem chiral chloride Claisen rearrangement CO,CH CO₂C₂H CO₂H cyclic cycloaddition reactions Diels-Alder reactions diene dienophile double bond E. J. Corey electron electrophilic ENAMINES enantioselectivity enol ether epoxides esters examples formation FUNCTIONAL GROUPS give Grignard reagents H CH H H H H H,C H,C CH H,C H,C H. C. Brown H₁C H₂ H₂C H₂O halides halogen hydride hydrogen hydroxyl intermediate intramolecular ketones Lewis acid lithium mechanism methyl molecules n-BuLi organoboranes organolithium organometallic oxidation oxygen Ph Ph PhCH₂O proton radical react reaction conditions REACTIONS INVOLVING reactive ring Scheme SECTION solvents step stereochemistry stereoselectivity steric structure Synth synthesis synthetic Tetrahedron Lett THERMAL ELIMINATIONS transition metal UNIMOLECULAR REARRANGEMENTS ylides