Regioselective Synthesis of Thiopyrano[3,2-c][1]benzothiopyran-5(2H)-one and Thieno[3,2-c][1]benzothiopyran-4(2H)-one

Author： Majumdar K. C.   Pal A. K.   Ghosh M.  

Publisher： Taylor & Francis Ltd

ISSN： 0039-7911

Source： Synthetic Communications, Vol.37, Iss.9, 2007-01, pp. : 1525-1534

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