Convenient procedure for converting 1, 3-dithiolane-2-thiones into 1, 3-dithiolan-2-ones

M Barbero, I Degani, S Dughera, R Fochi…

文献索引：Barbero, Margherita; Degani, Iacopo; Dughera, Stefano; Fochi, Rita; Piscopo, Laura Journal of the Chemical Society - Perkin Transactions 1, 1996 , # 3 p. 289 - 294

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摘要

1, 3-Dithiolan-2-ones have been obtained by reaction of 1, 3-dithiolane-2-thiones and epoxides in the presence of HBF4· Et2O. The reactions, carried out in anhydrous CH2CL2 at 0–5° C→ room temperature (Procedure A) or in anhydrous chlorobenzene at 0–5-→ 80° C (Procedure B), gave product yields of 63–95%. By Procedure B it was also possible to isolate the intermediates 1-oxa-4, 6, 9-trithiaspiro [4.4] nonanes in good yields (66–85%). ...