The Reaction of 2-Substituted Cycloalkanones with Aldehydes under Acidic Conditions
作者:Tadashi Sato、Kengo Hayase
DOI:10.1246/bcsj.64.3384
日期:1991.11
The title reaction proceeded with either ring enlargement or bicyclic compound formation, as well as the aldol reaction, depending upon the types of the reactants and reaction conditions.
标题反应进行环扩大或双环化合物形成,以及羟醛反应,这取决于反应物的类型和反应条件。
The stereochemistry of 2-benzalcyclohexanones and 2-benzalcyclopentanones
作者:A. Hassner、T.C. Mead
DOI:10.1016/s0040-4020(01)97605-7
日期:1964.1
trans-2-Benzal-6-methylcyclohexanone (III) and trans-2-benzal-5-methylcyclopentanone (VII) isomerize in the presence of acid to the endocyclic unsaturated isomers 2-benzyl-6-methyl-2-cyclohexenone (II) and 2-benzyl-5-methyl-2-cyclopentenone (VI) respectively. Structure proof and chemical conversions of II are described. Isomerization of III to its cis isomer IV was accomplished by light irradiation
Enantioselective α-Arylation of Ketones with Aryl Triflates Catalyzed by Difluorphos Complexes of Palladium and Nickel
作者:Xuebin Liao、Zhiqiang Weng、John F. Hartwig
DOI:10.1021/ja074453g
日期:2008.1.1
90%. Systematic studies on these alpha-arylations have revealed a number of factors that affect enantioselectivity. Ligands containing biaryl backbones with smaller dihedralangles generate catalysts that react with higher enantioselectivity than related ligands with largerdihedralangles. In addition, faster rates for reactions of aryl triflates versus those for reactions of aryl bromides allow the