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Communication | Regular issue | Vol 41, No. 9, 1995, pp.1935-1938
Published online, 1st January, 1970
DOI: 10.3987/COM-95-7179
Preparation of 2,4-Dialkylidene-1,3-dithietanes from Ynamines and Carbon Disulfide

Isao Shibuya, Midori Goto, Akihiro Oishi, Tohru Tsuchiya, Yoichi Taguchi, and Juzo Nakayama

*National Institute of Materials and Chemical Research, 1-1 Higashi, Tsukuba, Ibaraki 305, Japan


Aminoacetylenes R2N-C ≡ C-R’ (1) afforded 2,4-dialkylidene-1,3-dithietanes (2) on compressing or heating with carbon disulfied. The structure of 2 was determined by X-ray crystal structure analysis. Thiocarbamoylthioketenes, 1:1 adducts of the ynamine and carbon disulfide were proposed as the probable intermediates leading to 2. The present results indicate that the reactivities of ynamines toward carbon disulfide are different from those of electron-deficient acetylenes.