α-Thiocarbonyl-stabilized Triphenylphosphonium Ylides: Preparation, Structure, and Alkylation Reactions

Abstract

Abstract A number of α-thiocarbonyl-stabilized ylides II were prepared in moderate yields, and their alkylation reactions were studied. II(H, MeO), II(H, EtO), II(H, i-PrO), and II(H,H) were mixtures of cis and trans isomers, and the IIcis⁄IIItrans ratios were solvent-dependent. II(H, Ph), II(H, Me2N), II(H, MeS), and II(H, EtS) were composed of only cis isomers. All these ylides II with alkyl iodide gave S-alkylation products in good yields.