Silylene and disilene reactions with electron-poor 1,3-dienes: new ring systems and complete degradation of a CF3 group
作者:Manfred Weidenbruch、Peter Will、Karl Peters、Hans Georg von Schnering、Heinrich Marsmann
DOI:10.1016/0022-328x(96)06356-5
日期:1996.8
Photolysis of ((t)Bu(2)Si)(3) (1) or (Me(3)Si)(2)SiR(2), R = Mes, 2,4,6-(Pr3C6H2)-Pr-i, in the presence of 3,6-bis(trifluoromethyl)-1,2,4,5-tetrazine (5) furnishes silaheterocycles having 3,4,1-diazasilole (6) and 2,5-dihydro-1,3,2,5-diazadisiline (9, 10) ring skeletons. irradiation of 5 in the presence of an excess of 1 leads to complete degradation of one of the CF3 groups and to a partial rearrangement of the six-membered ring skeleton to give the new ring system 4. Cophotolysis of 1 and 2,5-bis(trifluoromethyl)-1,3,4-oxadiazole provides the 2,6-dihydro-1,5,3,7,2,6-dioxadiazadisilocine and 2,3,6-trihydro-1,4,2,3,6-oxazatrisiline derivatives 12 and 13, The structures of 4, 9, 12, and 13 were determined by X-ray crystallography.