Cyclization of ethyl endo-5-norbornene-2-carboxylate with hetarene sulfenyl chlorides
作者:V. K. Osmanov、G. N. Borisova、V. V. Kachala、A. V. Borisov
DOI:10.1007/s11172-010-0234-9
日期:2010.6
Cyclization of ethyl endo-5-norbornene-2-carboxylate with 1,3-benzothiazole-2-sulfenyl and 3-methoxycarbonylpyridine-2-sulfenyl chlorides follows two directions, namely, electophilic lactonization of unsaturated ester or polar cycloaddition of sulfenylating reagent to the multiple bond accompanied by ring closure by the nitrogen atom of the thiohetaryl fragment.
内-5-降冰片烯-2-羧酸乙酯与 1,3-苯并噻唑-2-亚磺酰基和 3-甲氧羰基吡啶-2-亚磺酰基氯化物的环化有两个方向,即不饱和酯的亲电内酯化或亚磺酰化试剂与多键的极性环加成,同时硫代芳基片段的氮原子闭环。