Donor substituted sulfonyl carbenes - 1. Methoxy arylsulfonyl carbenes

α-Oxy sulfones and sulfoximines: versatile intermediates

“…α-Methoxyα-halo sulfones have been shown to be a possible source of singlet carbenes upon treatment with bases. 374 These carbenes have been engaged in cyclopropanation reactions (Scheme 55, eqn. (i)).…”

Recent Advances in Synthesis of Cyclopropanes

“…It has been demonstrated that the philicity of phenylphosphorylcarbene [:CPhPO (OMe)(OX)] is dramatically changed from slightly electrophilic to highly nucleophilic in going from the ester carbene (OX = OMe) to the anionic carbene (OX = O − Na + ) (equation 107)234 . Generation of (alkoxy)sulfonylcarbenes [: C(OR)SO 2 Ar] by α-elimination and their stereospecific additions to enol ethers are reported235 . Chloro (phenylthio)methylene is transferred from PhSCHCl 2 to vinylsilanes with high (Z)-stereoselectivity under PTC conditions 236 .…”