作者:M. Weidenbruch、A. Schäfer、R. Rankers
DOI:10.1016/s0022-328x(00)90001-9
日期:1980.8
2,2,4,4-Tetraorganyl-1,3,2,4-dithiadisiletanes containing bulky organyl groups are obtained by copyrolysis of the disilanes R3SiSiR3 with sulfur or sulfur hexafluoride, or better by reaction of the disilanes R2HSiSiHR2 (R = CH3, i-C3H7, cyclo-C6H11, t-C4H9) with sulfur. In the case of R = t-C4H9 a considerable amount of the t-butyl groups is isomerized to the less crowded isobutyl groups. Monomeric
含有大体积的有机基团2,2,4,4- Tetraorganyl-1,3,2,4- dithiadisiletanes由copyrolysis的乙硅烷ř得到3 SiSiR 3与硫或六氟化硫由乙硅烷的R反应,或更好2 HSi = SiHR 2(R = CH 3,iC 3 H 7,环-C 6 H 11,tC 4 H 9)。在R = tC 4 H 9的情况下,大量的叔丁基被异构化为较少拥挤的异丁基。单体硅硫磷R 2SiS无法通过此路线使用。将硫插入1,1-二叔丁基-1-硅环丁烷中的反应生成2,4-二叔丁基-2,4-二丙基-1,3,2,4-二硫代二丁烷,而不是预期的1, 1-二叔丁基-1-sila-2-硫代环戊烷。然而,后一种化合物是由3-溴丙基三氯硅烷与Na 2 S的冠醚催化的环化反应,然后与叔丁基锂进行烷基转移而产生的。碘代硅烷R 3 SiI(R = iC 3 H 7,环-C 6 H 11)与Na