Synthesis, Structure, Tautomerism, and 1,4-Dipolar Cycloaddition of Thermally Stable, Crystalline 1,4-Dipoles
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Phenyl isothiocyanate reacted with 2-methylene-1,3-dimethylimidazolidines to give thermally stable, crystalline adducts that possess an inner salt (1,4-dipolar) structure or its tautomeric thioamide structure depending on substituent on the methylene part. Tautomerism between the 1,4-dipolar form and the thioamide form, X-ray diffraction analysis, and 1,4-dipolar cycloaddition with DMAD of these adducts are reported.
- Chemistry Letters
Chemistry Letters 1998(9), 887-888, 1998-09-05
The Chemical Society of Japan