Convenient Routes to Di‐<i>tert</i>‐butylsilanediyl: Chemical, Thermal and Photochemical Generation

Abstract

α-Elimination from 1 and thermal or photochemical cleavages of 2 produce tBu2Si:, the trapping or subsequent products of which can be isolated in good to very good yields. The silanediyl generated from 1a by α-elimination does not dimerize to tBu4Si2, but instead produces the four-membered ring compound 3 in 15% yield.