... 1983, Vol. 14, pp. 139-142 0308-664X/83/ 1402-0 139/$18.50/0 Q 1983 Gordon and Breach, Science Publishers, Inc. Printed in the United States of America ON THE SYNTHESIS OF 2-METHYLCHROMENE-4-THIONE AND 2-METHYL-1-THIOCHROMONE RICHARD C. COOMBES and DAVID E. FENTON Department of Chemistry, The University, SHEFFIELD S3 7HF. UK (Received June 22, 1982; in final form August 2nd 1982) ...