Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 83, Issue 20, Pages 12753-12762Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.8b02189
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Funding
- NSFC [21602021, 21502009, 21702021, 81573588]
- Science and Technology Department of Sichuan Province [2017JZYD0001, 2017JQ0032]
- Thousand Talents Program of Sichuan Province
- Chengdu Talents Program
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Direct sulfide organocatalysis is an emerging topic in research on synthetic chemistry. Here, an unprecedented sulfide-catalyzed diastereoselective [4+1] annulation of (in situ generated) ortho-quinone methides and bromides is reported. Notably, the robustness of such sulfide organocatalysis was demonstrated by performing the catalytic reaction under oxidative conditions without significantly affecting the reaction outcome. Various dihydrobenzofurans with diverse substituents were obtained with high isolated yields of up to 98% and remarkable diastereoselectivity (>19:1 dr in general).
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