A new type of S-S dication. Preparation and reactions with alkenes and dienes
作者:Valentine G Nenajdenko、Nikolai E Shevchenko、Elizabeth S Balenkova
DOI:10.1016/s0040-4020(98)00210-5
日期:1998.5
The reaction of dimethyl sulfide ditriflate with dimethyl sulfide leads to the formation of tetramethyldisulfonium ditriflate 1a representing a first example of acyclic S-S dication. Similarly was prepared S-S dication 1b from tetrahydrothiophene. It was found that dications 1a and 1b react with arylalkenes. The reaction forms the corresponding 1,2-disulfonium salts. Conjugated dienes afford 1,4-disulfonium
二甲基硫醚二三氟甲基磺酸盐与二甲基硫醚的反应导致形成四甲基二硫磺酸二三氟甲基磺酸盐1a,其代表无环SS的第一个例子。类似地,由四氢噻吩制备SS指示剂1b。发现螯合剂1a和1b与芳基烯烃反应。反应形成相应的1,2-二ulf盐。共轭二烯提供1,4-二ulf盐。