.beta.-Iodo Ketones by Prevost Reaction Of Vinyl Carbinols
摘要:
Treatment of alpha-ethenyl-alpha-phenylbenzenemethanol with iodine and silver acetate in either acetic acid or benzene gave 1,2-diphenyl-3-iodo-1-propanone (6) in 85% yield. Ring enlargements involving similar rearrangements were observed with a number of cyclic vinyl carbinols. In some cases, mixtures of normal Prevost products and rearranged beta-iodo ketones were obtained. The exact scope of this apparently novel reaction remains to be elucidated. Treatment of the beta-iodo ketones with DBU gave the corresponding alpha,beta-unsaturated ketones from which a number of amino ketones and amino alcohols were prepared by conjugate addition followed by reduction.
.beta.-Iodo Ketones by Prevost Reaction Of Vinyl Carbinols
摘要:
Treatment of alpha-ethenyl-alpha-phenylbenzenemethanol with iodine and silver acetate in either acetic acid or benzene gave 1,2-diphenyl-3-iodo-1-propanone (6) in 85% yield. Ring enlargements involving similar rearrangements were observed with a number of cyclic vinyl carbinols. In some cases, mixtures of normal Prevost products and rearranged beta-iodo ketones were obtained. The exact scope of this apparently novel reaction remains to be elucidated. Treatment of the beta-iodo ketones with DBU gave the corresponding alpha,beta-unsaturated ketones from which a number of amino ketones and amino alcohols were prepared by conjugate addition followed by reduction.
.beta.-Iodo Ketones by Prevost Reaction Of Vinyl Carbinols
作者:Engelbert Ciganek、J. C. Calabrese
DOI:10.1021/jo00119a021
日期:1995.7
Treatment of alpha-ethenyl-alpha-phenylbenzenemethanol with iodine and silver acetate in either acetic acid or benzene gave 1,2-diphenyl-3-iodo-1-propanone (6) in 85% yield. Ring enlargements involving similar rearrangements were observed with a number of cyclic vinyl carbinols. In some cases, mixtures of normal Prevost products and rearranged beta-iodo ketones were obtained. The exact scope of this apparently novel reaction remains to be elucidated. Treatment of the beta-iodo ketones with DBU gave the corresponding alpha,beta-unsaturated ketones from which a number of amino ketones and amino alcohols were prepared by conjugate addition followed by reduction.