6,7-Dimethylene-3-thiabicyclo[3.2.0]heptane-3,3-dioxide, a masked form of [4]dendralene and conjunctive reagent for tandem annelations
作者:Caroline M. Buchan、J. I. G. Cadogan、Ian Gosney、William J. Henry
DOI:10.1039/c39850001785
日期:——
Previous limitations of highly reactive [4]dendralene [3,4-dimethylenehexa-1,5-diene (1)] as a tandem annelating reagent in Diels–Alder reactions are overcome by use of its masked form, 6,7-dimethylene-3-thiabicyclo[3.2.0]-heptane-3,3dioxide (2), and subsequent extrusion of SO2 under flash vaccum pyrolytic conditions.
在Diels-Alder反应中,高反应性[4]树枝烯[3,4-二亚甲基六-1,5-二烯(1)]作为串联成环剂存在的局限性通过使用其掩蔽形式6,7-二亚甲基3-噻二环[3.2.0]-庚烷-3,3dioxide(2),然后在快速真空热解条件下挤出SO 2。