ArN=S, (2) that bear a substituent (CN, Br or Me) ortho to the reactive N=S group have been generated by two entirely different routes and intercepted with dimethylbutadiene to afford mixtures of Diels-Alder and ene adducts, (3) and (4), respectively; the ene adduct predominates for each system.
瞬态
硫代亚硝基
芳烃ArN = S,(2)带有与反应性N = S基团邻位的取代基(CN,Br或Me),是通过两种完全不同的途径生成的,并被二甲基
丁二烯截取,得到Diels-Alder和烯的混合物分别为(3)和(4)的加合物; 烯加合物在每个系统中占主导地位。