Investigation of the reaction between sodium hydroxide and syn-and anti-isomers of 5-substituted 2-(4-chlorobutyryl)-aminobenzophenones oximes
摘要:
By the reaction of syn-isomers of 5-substituted 2-(4-chlorobutyryl)aminobenzophenones oximes with NaOH syn-isomers of 5-substituted 2-(2-oxopyrrolidin-1-yl)benzophenones oximes were obtained. Similarly the anti-isomers of 5-substituted 2-(4-chlorobutyryl) aminobenzophenones oximes treated with NaOH underwent cyclization into anti-isomers of 5-substituted 2-(2-oxopyrrolidin-1-yl)benzophenones oximes. Crystal and molecular structures were investigated of the syn-isomer of 5-methyl-2-(2-oxopyrrolidin-1-yl)benzophenone oxime, the anti-isomer of 5-bromo-2-(2-oxopyrrolidin-1-yl)benzophenone oxime, and the syn-isomer of 5-methyl-2-(4-chlorobutyryl)aminobenzo-phenone oxime. The fragmentation features under the electron impact of syn- and anti-isomers of 5-substituted 2-(2-oxopyrrolidin-1-yl)benzophenones oximes are discussed.