作者:Grzegorz Mloston、Rolf Huisgen、Helmut Huber、David S. Stephenson
DOI:10.1002/jhet.5570360423
日期:1999.7
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。