Reactions of N-Methyl Cyclic Ketene-N,X-acetals (X = S, O) with Isocyanates and Isothiocyanate

Aihua Zhou; Liwei Cao; Haiqing Li; Zhuqing Liu; Charles U. Pittman Jr

doi:10.1055/s-2005-922792

LETTER

Reactions of N-Methyl Cyclic Ketene-N,X-acetals (X = S, O) with Isocyanates and Isothiocyanate

Aihua Zhou*, Liwei Cao, Haiqing Li, Zhuqing Liu, Charles U. Pittman Jr*
Department of Chemistry, Mississippi State University, Starkville, MS 39762, USA
Fax: +1(662)3257611; e-Mail: cpittman@ra.msstate.edu; e-Mail: zhou_aihua@yahoo.com;

Abstract

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Abstract

Nucleophilic N-methyl cyclic ketene-N,X-acetals (X = S, O) can react with electrophilic aryl isocyanates, vinyl isocyanates and aryl isothiocyanates to form mono-adducts, bis-adducts and spirobicyclic compounds.

Key words

N-methyl cyclic ketene-N,S-acetals - N-methyl cyclic ketene-N,O-acetals - aryl isocyanates - vinyl isocyanates - aryl isothiocyanate

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References

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