1844
A. R. Kiasat et al.
General Procedure for the Conversion of Oxiranes
to Thiiranes
A stirred mixture of epoxide (1 mmol) and thiourea (2 mmol) was heated
at 120◦C with a constant temperature bath for the appropriate time,
as shown in Table I. The progress of the reaction was monitored by
TLC. The mixture was cooled to room temperature, and CCl4 (20 ml)
was added to the mixture and filtered. Evaporation of the solvent under
reduced pressure gave the pure products in 65–92% isolated yields.
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