Acetonyltriphenylphosphonium Bromide and Its Polymer-Supported Analogues as Catalysts for the Protection of Carbonyl Compounds as Acetals or Thioacetals
作者:Yung-Son Hon、Chia-Fu Lee、Rong-Jiunn Chen、Yi-Fen Huang
DOI:10.1081/scc-120022172
日期:2003.1.8
Abstract Both acetonyltriphenylphosphonium bromide (ATPB) and poly-p-styryldiphenylacetonylphosphonium bromide (PATPB) are excellent catalysts in the protection of aldehydes as acetals or thioacetals. In general, ATPB is highly selective as ketones do not give good yields of ketals with this catalyst.
摘要 丙酮基三苯基溴化鏻 (ATPB) 和聚对苯乙烯基二苯基丙酮基溴化鏻 (PATPB) 都是保护醛类(如缩醛或硫代缩醛)的优良催化剂。一般而言,ATPB 具有高度选择性,因为使用该催化剂时,酮不会产生良好的缩酮收率。