An Efficient Synthesis of Imidazolinium Salts Using Vinyl Sulfonium Salts
Organic Letters2011Vol. 13(12), pp. 3060–3063
Citations Over TimeTop 10% of 2011 papers
Abstract
The synthesis of imidazolinium salts from the reaction of formamidines and (2-bromoethyl)diphenylsulfonium triflate is described. A variety of symmetrical and unsymmetrical imidazolinium triflate salts were synthesized in high yield in short reaction times under mild conditions. Aromatic and aliphatic N-substituents work well. The reaction is proposed to proceed via generation of a vinyl sulfonium salt intermediate from the bromoethylsulfonium triflate.
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