Adamantanethione S-methylide (12) is a nucleophilic 1,3-dipole which easily combines with electrophilic acetylenic and ethylenic bonds affording dihydrothiophene and thiolane derivatives, usually in high yields. The S-methylide 12, generated by extrusion of nitrogen from the 2,5-dihydro-1,3,4-thiadiazole 11, can not be isolated, but is intercepted in situ by dipolarophiles; otherwise, 12 furnishes
金刚烷硫酮S-甲基化物(12)是亲核的1,3-偶极子,它容易与亲电的炔键和烯键结合,通常以高收率提供二氢
噻吩和
噻吩衍
生物。由2,5-二氢-1,3,4-
噻二唑11中的氮挤出产生的S-亚甲基12不能被分离,而是被亲极亲核剂原位截留。否则,12种配料不可逆的spirothiirane 13. 1个H核磁共振谱和质谱建立
丙炔酸甲酯,
丙烯腈,
丙烯酸甲酯,benzylidenemalononitrile和甲基α-cyanocinnamate的加成物的区域
化学。1,3-偶极子不与常见的烯烃反应;高度紧张的反式-环
辛烯产生环加合物。