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A Streamlined Synthesis of 2,3-Dihydrobenzofurans via the ortho -Quinone Methides Generated from 2-Alkyl-Substituted Phenols

✍ Scribed by Wu, Bo; Chen, Mu-Wang; Ye, Zhi-Shi; Yu, Chang-Bin; Zhou, Yong-Gui

Book ID
121708300
Publisher
John Wiley and Sons
Year
2014
Tongue
English
Weight
199 KB
Volume
356
Category
Article
ISSN
1615-4150

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Stereoselective synthesis of tetrahydrofuro-and tetrahydropyrano[3,2-c] benzothiopyrans was achieved by intramolecular [4+2]cycloaddition of o-thiobenzoquinone methides that were generated in situ from bis(2-formylphenyl) disulfide and alkenols in the presence of iodine under mild reaction conditio