Carbamoyl radicals from carbamoylxanthates: a facile entry into isoindolin-1-ones
作者:Germán López-Valdez、Simón Olguín-Uribe、Luis D. Miranda
DOI:10.1016/j.tetlet.2007.09.142
日期:2007.11
It has been found that carbamoylxanthates derived from secondary t-butyl amines are stable compounds which function as efiicient sources of carbamoyl radicals. The carbamoylxanthates derived from t-butylbenzylamines can be efficiently transformed into 2- t-butylisoindolin-1-ones via an oxidative radical cyclization process. The carbamoylxanthates derived from N-t-butylamino olefins underwent the expected cyclization/xanthate-transfer process to afford the corresponding pyrrolidones and piperidones under thermally induced DLP fragmentation conditions and in the presence of catalytic Et3B in air, at room temperature. (C) 2007 Elsevier Ltd. All rights reserved.