Aza-Diels–Alder reactions and synthetic applications of thio-substituted 1,3-dienes with arylsulfonyl isocyanates
作者:Shang-Shing P. Chou、Chia-Cheng Hung
DOI:10.1016/s0040-4039(00)01447-7
日期:2000.10
The first aza-Diels–Alder reactions of arylsulfonyl isocyanates with thio-substituted 1,3-dienes via the 3-sulfolene precursors 1 gave the cyclized products 3 with complete control of regio- and chemoselectivity. The cyclized products 3a and 4 underwent further interesting reactions with nucleophiles and bases to give useful heterocyclic compounds.
芳基磺酰基异氰酸酯与硫取代的1,3-二烯经3-环丁烯前体1的第一次氮杂-狄尔斯-阿尔德反应使环化产物3完全控制了区域选择性和化学选择性。环化产物3a和4与亲核试剂和碱进行进一步有趣的反应,得到有用的杂环化合物。