Reactions of tetramesityldisilene with azides: synthesis of disilaaziridines

Article abstract of DOI:10.1016/0022-328X(90)87222-Y

The reactions of several organic azides (RN3) with tetramesityldisilene (1) were studied.Azides with R = Ph or Mes each gave two products, a disilaaziridine and a disilatriazoline.When R = PhCH2 or Me3SiCH2 intermediate adducts of the azide and the disilene were found.These adducts and the disilatriazolines both react thermally to yield the respective disilaaziridines.For R = Me3Si only a disilaaziridine was observed, the structure of which was determined by X-ray crystallography and was found to have a short Si-Si internuclear distance of 2.23 Angstroem.Crystal data: R = trimethylsilyl, a 23.561(3), b 19.001(3), c 16.916(3) Angstroem, monoclinic, β = 106.095 deg, C2/c, Z = 8.Novel five-membered silicon heterocycles were isolated from the reactions of 1 with toluenesulfonyl azide and diphenylphosphonyl azide.