Highly Selective FeCl<sub>3</sub>-Catalyzed Cyclization of β-Sulfonamidoallenes or β-Allenols and Aldehydes
作者:Jiajia Cheng、Xinjun Tang、Shengming Ma
DOI:10.1021/cs300838k
日期:2013.4.5
A FeCl3-catalyzed Prins cyclization reaction of β-sulfonamidoallenes or β-allenols with aldehydes has been developed for the synthesis of 3-chloromethyl-1,2,5,6-tetrahydro-1H-pyridine or 3-chloromethyl-5,6-dihydro-2H-pyran. The reaction is highly selective due to the stability of the allyl cation intermediate.
已开发出一种FeCl 3催化的β-磺酰氨基丙二烯或β-烯丙醇与醛的Prins环化反应,用于合成3-氯甲基-1,2,5,6-四氢-1 H-吡啶或3-氯甲基-5, 6-二氢-2 H-吡喃。由于烯丙基阳离子中间体的稳定性,该反应是高度选择性的。