Practical and Efficient Synthesis of 3-Aryl-2H-benzo[1,4]thiazine Derivatives Catalyzed by KHSO₄

Abstract

Abstract

KHSO₄ efficiently catalyzes the condensation of o-aminothiophenols and 2-bromo-1-aryl-ethanones to yield 3-aryl-2H-benzo[1,4]thiazines in good yields.

Keywords:

• o-Aminothiophenols
• 3-aryl-2H-benzo[1,4]thiazine
• KHSO4

ACKNOWLEDGMENT

The authors are thankful to the Alzahra Research Council for partial financial support.

Notes

^aYields refer to isolated products.

^aYield of isolated products.

^aYield of isolated products.

^aIsolated yields.