Diastereoselective Approach to Substituted Oxazolidinones from Morita–Baylis–Hillman Adducts
作者:Patrícia Rezende、Paulo H. S. Paioti、Fernando Coelho
DOI:10.1080/00397910903534023
日期:2010.12.22
for the diastereoselective preparation of 4- and 4,5-substituted oxazolidinones from Morita–Baylis–Hillman adducts. The strategy is based on an intramolecular cyclization involving a nucleophilic attack of an alkoxide ion to the carbonyl group of a carbamate. The latter is prepared from a Curtius rearrangement having Morita–Baylis–Hillman adduct as substrate. The oxazolidinones were prepared in six
我们在此公开了一种从 Morita-Baylis-Hillman 加合物非对映选择性制备 4- 和 4,5- 取代的恶唑烷酮的新策略。该策略基于涉及醇盐离子对氨基甲酸酯羰基的亲核攻击的分子内环化。后者由以 Morita-Baylis-Hillman 加合物为底物的 Curtius 重排制备。恶唑烷酮分六步制备,总收率分别为 18% 和 49%。