Redox-untersuchungen an jodboranen VI. Zur kenntnis von diborylsulfanen, R2B-Sx-BR2
作者:Walter Siebert、Eduard Gast、Max Schmidt
DOI:10.1016/s0022-328x(00)92946-2
日期:1970.7
with H2S2 or Na2S2 leads to the formation of bis-(dialkylboryl)disulfanes,R2B-S-S-BR2(VI). This new class of compounds exhibits a high thermal, but a low hydrolytical, stability. Attempts to obtain diborylsulfanes, R2B-S-BR2(V), by removing one sulfur atom from (VI) result in products formed by the rearrangement of (V). The reaction of disilthiane with dialkylhaloborane yields (V), stable only in solution
二烷基碘硼烷与硫之间的氧化还原反应以及二烷基卤硼烷与H 2 S 2或Na 2 S 2的反应导致形成双-(二烷基硼基)二硫醚R 2 B-SS-BR 2(VI)。这类新化合物显示出高的热稳定性,但水解性却很低。尝试获得二硼烷基硫烷,R 2 B-S-BR 2(V),通过从(VI)中除去一个硫原子得到由(V)的重排形成的产物。二甲噻吩与二烷基卤硼烷的反应产生(V),仅在溶液中稳定。稳定的二硼烷基硫烷是由二苯基碘硼烷和甲硅烷基或硫,以及通过合适的硼烷基硫醚的热缩合而获得的。