A Diastereoselective Unique Route to Cyclopropanes Functionalized at All Three Ring Carbon Atoms from Acyclic Vinyl Sulfone-Modified Carbohydrates
作者:Ananta Kumar Atta、Tanmaya Pathak
DOI:10.1021/jo802709q
日期:2009.4.3
In a departure from the current trend of using metal-catalyzed routes to cyclopropanation, pentosyl and hexosyl vinyl sulfone-modified carbohydrates having the terminal double bond and a suitably positioned leaving group are reacted in a stereoselective fashion with a series of nucleophiles to yield a myriad of cyclopropanes substituted at all three ring carbon atoms.
与当前使用金属催化途径进行环丙烷化的趋势背道而驰,具有末端双键和适当位置的离去基团的戊糖基和己糖基乙烯基砜改性的碳水化合物与一系列亲核试剂以立体选择性方式反应,生成无数种在全部三个环碳原子上取代的环丙烷的数目。