An unusual and highly efficient access to thieno[2,3-b]-benzothiopyran structures
摘要:
Dihydrothieno[2,3-b]-benzothiopyran-4-ones are easily obtained by an intermolecular radical addition to an unactivated olefin using an S-o-fluorophenacyl xanthate followed by a novel, base induced domino cyclisation. (C) 1999 Elsevier Science Ltd. All rights reserved.
An unusual and highly efficient access to thieno[2,3-b]-benzothiopyran structures
摘要:
Dihydrothieno[2,3-b]-benzothiopyran-4-ones are easily obtained by an intermolecular radical addition to an unactivated olefin using an S-o-fluorophenacyl xanthate followed by a novel, base induced domino cyclisation. (C) 1999 Elsevier Science Ltd. All rights reserved.
A divergent approach to highly substituted benzothiepinones and to 2,3-dihydrothieno[2,3-b]thiopyran-4-ones
作者:Peter Boutillier、Béatrice Quiclet-Sire、Syeda Nahid Zafar、Samir Z. Zard
DOI:10.1016/j.tetasy.2010.06.006
日期:2010.7
The radical addition-transfer of S-(2-fluoro-phenacyl)xanthates can be used to construct rapidly benzothiepinones, including libraries of complex aza-bridged derivatives, and highly functionalized 2,3-dihydrothieno[2,3-b]thiopyran-4-ones. (C) 2010 Elsevier Ltd. All rights reserved.