名称:
Studies on isocyanides. A facile synthesis of 4,5-dihydro-1,4-benzothiazepin-3(2H)-ones via post-condensation modifications of the Ugi reaction
摘要:
A series of 4,5-dihydro-1,4-benzothiazepin-3(2H)-ones 9 was prepared via Ugi 4-CC, S-N aliph, and S-N arom. This procedure, which resembles the well-known Hulme's and Zhu's protocols, allows a facile access to the above heterocyclic system. Further transformations of the cyclized products appear to be feasible. (c) 2005 Elsevier Ltd. All rights reserved.