One-pot synthesis of <font>α</font>-bromoacetals of ketones from secondary alcohols and 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) in ethylene glycol
作者:Bingbing Han、Zubiao Zheng、Fang Wu、Aidong Wang
DOI:10.1080/00397911.2017.1378681
日期:2017.12.17
of ketones were prepared from various secondary alcohols with 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) and ethylene glycol through oxidation, bromination, and acetalization in one pot without the use of other catalysts under mild conditions. The effects of DBDMH, the solvent, and N-bromosuccinimide on the reaction were investigated. Under the optimal conditions, most α-bromoacetals of ketones were
摘要 以 1,3-二溴-5,5-二甲基乙内酰脲 (DBDMH) 和乙二醇为原料,在温和条件下,不使用其他催化剂,通过氧化、溴化和乙缩醛化反应,在一锅中制备了酮的 α-溴缩醛。研究了 DBDMH、溶剂和 N-溴代琥珀酰亚胺对反应的影响。在最佳条件下,大多数酮的 α-溴缩醛以 90-98% 的产率获得。图形概要