Journal
ASIAN JOURNAL OF ORGANIC CHEMISTRY
Volume 11, Issue 5, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ajoc.202200007
Keywords
cyclization; electrophilic source; isocourmarin; regioselectivity; thiocyanation
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Funding
- National Natural Science Foundation of China [21971013]
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A metal-free and regioselective electrophilic thiocyanation/cyclization of alkynylbenzoates has been developed to afford a series of thiocyanato-containing isocourmarins catalyzed by Me3SiCl. This method tolerates a wide range of substrates and functional groups, with moderate to excellent yields. The mild reaction conditions make this protocol practical for accessing isocourmarins with a diverse range of transformations.
A metal-free and regioselective electrophilic thiocyanation/cyclization of alkynylbenzoates has been developed to afford series of thiocyanato-containing isocourmarins catalyzed by Me3SiCl. Tandem thiocyanation/6-endo cyclization of alkynylbenzoates was achieved using N-thiocyanatosuccinimide (NTS). A wide scope of substrates and functional groups have been tolerated with moderate to excellent yield up to 98%. The mild reaction conditions make this protocol more practical to access isocourmarins bearing a thiocyanato group with diverse transformations.
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