125605-84-7Relevant articles and documents
Process for the preparation of optically active 4-oxo-1-benzopyran-2-carboxylic acid derivatives and intermediates thereof
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, (2008/06/13)
A process for the preparation of optically active 4-oxo-1-benzopyran-2-carboxylic acid derivatives of the formula STR1 wherein X and Y are hydrogen atom, halogen atom or alkyl group, and R1 is hydrogen atom or alkyl group, intermediates thereof, as well as a process for the preparation of the intermediates.