Stereospecific Benzyne-Induced Olefination from β-Amino Alcohols and Its Application to the Total Synthesis of (−)-1-Deoxy-D-fructose
作者:Jih Ru Hwu、Yung Chang Hsu
DOI:10.1002/chem.201001735
日期:2011.4.18
'Ole in one! Treatment of β‐amino alcohols with CS2 under alkaline conditions gave 1,3‐thiazolidine‐2‐thiones, which were then treated with benzyne generated in situ. The reaction underwent an unprecedented addition–elimination process to give the desired olefins in 60–87 % yields (see scheme; DBU=1,8‐diazabicyclo[5.4.0]undec‐7‐ene).
“合而为一!在碱性条件下用CS 2处理β-氨基醇可得到1,3-噻唑烷-2-硫酮,然后用原位生成的苯炔进行处理。反应经历了前所未有的加成-消除过程,以60-87%的收率得到了所需的烯烃(见方案; DBU = 1,8-二氮杂双环[5.4.0]十一碳-7-烯)。