Synthesis of a symmetric tetrakis-epoxide from a 3,4- d -mannitol bridged o , o -cyclophane
摘要:
The coupling reaction of 1,2:5,6-di-O-isopropylidene-D-mannitol with alpha,alpha'-dibromoxylene has been reinvestigated. We found reaction conditions leading to the 3,4-D-mannitol bridged o,o-cyclophane 3, free of the 3,4-O-o-xylylene protected mannitol 2. Compound 3 could be converted in 57% yield into tetrakis-epoxide 4. (C) 2001 Elsevier Science Ltd. All rights reserved.
DOI:
10.1016/s0040-4020(01)00017-5
作为产物:
描述:
bis(1,2:5,6-di-O-isopropylidene-D-mannitol-3,4-diyl) bis xylylene-o,o-cyclophane 在
溶剂黄146 作用下,
反应 4.0h,
以96%的产率得到bis(D-mannitol-3,4-dihyl) bis xylylene-o,o-cyclophane
参考文献:
名称:
Synthesis of a symmetric tetrakis-epoxide from a 3,4- d -mannitol bridged o , o -cyclophane
摘要:
The coupling reaction of 1,2:5,6-di-O-isopropylidene-D-mannitol with alpha,alpha'-dibromoxylene has been reinvestigated. We found reaction conditions leading to the 3,4-D-mannitol bridged o,o-cyclophane 3, free of the 3,4-O-o-xylylene protected mannitol 2. Compound 3 could be converted in 57% yield into tetrakis-epoxide 4. (C) 2001 Elsevier Science Ltd. All rights reserved.