A variety of 2‐substituted thiophenes is readily obtained from 2‐(2‐thienyl)‐4H‐3,l‐benzothiazin‐4‐one (2), which is formed when thiophene reacts with methyl 2‐isothiocyanatobenzoate (1) in the presence of anhydrous stannic chloride.

D i f l u o r o m e t h y l a t i o n o f 3 -I o d o i n d a z o l e w i t h C h l o r o d i f l u o r o m e t h a n e

Synthesis of Derivatives of Thiophene Using Methyl 2-Isothiocyanatobenzoate.-The results of a brief investigation of the use of (I) for the synthesis of a number of derivatives of thiophene are reported. -(DECK, L. M.; TURNER, S. D.; DECK, J. A.; PAPADOPOULOS, E. P.; J.