Method for selective preparation of aryl...

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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Reexamination Certificate

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10521809

ABSTRACT:
The present invention provides a method for preparing an aryl 5-thio-β-D-aldohexopyranoside derivative of Formula (III), which comprises reacting a 5-thio-D-aldohexopyranose derivative of Formula (I) with Ar-OH of Formula (II) in the presence of a phosphine represented by PR11R12R13and an azo reagent represented by R21—N═N—R22in accordance with the following scheme

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