One-pot transformation of RCHO to (E)-RCH=CHSiMe3 using CHI3, Mn, Me3SiCl, and a catalytic amount of CrCl2
Iodoform is reduced with manganese in the presence of Me3SiCl to give Me3SiCHI2 (1). A one-pot transformation of aldehydes to (E)-1- alkenyltrimethylsilanes is then performed with iodoform, manganese, Me2SiCl, and a catalytic amount of chromium(II) chloride in THF via in situ formation of 1.