Orientation in the Crossed Aldol Condensation of Chloral with Unsymmetrical Aliphatic Ketones
作者:Eberhard Kiehlmann、Pui-Wah Loo
DOI:10.1139/v71-260
日期:1971.5.15
in the crossed aldol condensation with chloral has been studied in glacial acetic acid and in dimethoxyethane. The reaction is irreversible and not accompanied by dehydration of the resulting 1,1,1-trichloro-3-hydroxy-4-alkanones. Except for butanone, condensation occurs preferentially at the least-hindered position of an unsymmetrical ketone. The α-methyl/α-methylene condensation product ratio obtained