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  • Title: Syntheses of furo[3,4-c]coumarins and related furyl coumarin derivatives via intramolecular Wittig reactions.
    Author: Jang YJ, Syu SE, Chen YJ, Yang MC, Lin W.
    Journal: Org Biomol Chem; 2012 Jan 28; 10(4):843-7. PubMed ID: 22130868.
    Abstract:
    A new and general strategy for highly functional furo[3,4-c]coumarins and related furyl coumarin derivatives has been developed, which is based on an extraordinarily facile intramolecular Wittig reaction, starting from α,β-unsaturated ketones, tributylphosphine, and acyl chlorides. The phosphorus ylides were proposed to be the key intermediates for constructing the crucial furan ring, leading to a wide variety of substituted furyl coumarins in one step.
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