Regio- and diastereoselective synthesis of (3,4,8,9)-dibenzo-2,7-dioxa-5,10-diaza[4.4.4] propellanes from 4-substituted 1,2-cyclohexanediones and o-aminophenols, a computational approach to regioselectivity prediction
作者:Joanna Nowicka-Scheibe、Jacek G. Sośnicki、Wanda Sawka-Dobrowolska
DOI:10.1016/j.tetlet.2007.06.008
日期:2007.7
The regio- and diastereoselective condensation reactions between 4-Me and 4-t-Bu substituted 1,2-cyclohexanediones and substituted o-aminophenols yielding the [4.4.4] propellane derivatives have been studied. The possibility of using semi-empirical PM3 calculations for rationalization and prediction of the regioisomer formation has been studied.
研究了4-Me和4- t -Bu取代的1,2-环己二酮与取代的邻氨基苯酚之间的区域和非对映选择性缩合反应,生成[4.4.4]丙炔衍生物。研究了使用半经验PM3计算进行区域异构体形成的合理化和预测的可能性。
Sulfur‐Catalyzed Stereo and Regioselective Synthesis of Heteropropellanes via Oxidative Condensation of Cyclohexanones with 2‐Aminophenols
作者:Thanh Binh Nguyen、Pascal Retailleau
DOI:10.1002/adsc.201900436
日期:2019.8.5
Sulfur was found to be an excellent catalyst for the oxidative coupling of cyclohexanones with o‐aminophenols using DMSO as oxidant. A wide range of heteropropellanes were obtained with complete regio and stereoselectivities and functional group tolerance.