Unexpected Metal-Free Transformation of<i>gem</i>-Dibromomethylenes to Ketones under Acetylation Conditions
作者:Rino Kimura、Yusuke Sawayama、Atsuo Nakazaki、Kazunori Miyamoto、Masanobu Uchiyama、Toshio Nishikawa
DOI:10.1002/asia.201403277
日期:2015.4
Novel conditions for the transformation of gem‐dibromomethylenes to ketones are described. gem‐Dibromo compounds were treated with acetic anhydride and triethylamine in dichloromethane/water at room temperature under an air atmosphere to give the corresponding ketones in moderate yields. A radical mechanism is proposed based on experimental results.
描述了将二溴代亚甲基宝石转变为酮的新条件。室温下,在空气中于二氯甲烷/水中,用乙酸酐和三乙胺处理gem- Dibromo化合物,以适当的收率得到相应的酮。根据实验结果提出了一种根本机理。