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Paper | Regular issue | Vol 45, No. 6, 1997, pp.1081-1095
Published online, 1st January, 1970
DOI: 10.3987/COM-97-7753
Synthesis and Structural Investigation of Some Cyclic Ketene Acetals. Detection of an Unexpected Proton Transfer in (3-Benzylthiazolidin-2-ylidene)acetamide

Csaba Szántay Jr.,* István Szabadkai, Kálmán Harsányi, and Ferenc Trischler

*Chemical Works of Gedeon Richter Ltd., Spectroscopic Research Division, Budapest 10, P. O. Box 27, H-1475 Budapest, Hungary


The thiazolidines (2) and (3) were synthesized. Some of these compounds exhibit unexpected chemical behavior; e.g in the case of (3-benzylthiozolidin-2-ylidene)acetamide (3b), NMR investigations revealed the presence of chemical exchange involving C(6)-H and the NH2 protons.