Reactivity of cyclooctene derived episulfonium ions toward nucleophiles and the course of sulfenyl halide addition to cyclooctene
作者:A.S. Gybin、W.A. Smti、M.Z. Krimer、N.S. Zefirov、L.A. Novgorodtseva、N.K. Sadovaya
DOI:10.1016/0040-4020(80)85049-6
日期:1980.1
The reactions of the stable S-methylepisutfonium ions derived from cis-cyclooctene with various nucleophiles were found to proceed mainly as the attack at a C atom of episulfonium ring in contrast to the previous data of Helmkamp et al.4 The course of the RSCI AdE-reaction with cyclooctene under the conditions of increased polarity corresponded to the formation of intermediates closely related to episulfonium
与Helmkamp等人先前的数据相反,发现顺式-环辛烯衍生的稳定的S-甲基表氟鎓离子与各种亲核试剂的反应主要是由于对epi环的C原子的攻击而进行的。4在极性增加的条件下,RSCI Ad E与环辛烯的反应过程与形成与epi硫离子密切相关的中间体相对应。观察到2,4-二硝基苯并二烯硫基烯衍生物与顺式-环辛烯的反应发生了环1,5-氢化物移位。