期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 21, 期 5, 页码 1046-1055出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ob02025d
关键词
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A novel one-pot base-promoted insertion reaction of indolyl 2-alkynes into a C-C single bond of 1,3-diketones, followed by intramolecular aldol reaction and dehydrative aromatization, has been described. This reaction cascade allows for the construction of 2-indolyl phenols, involving the formation of both C1-C2 and C3-C4 bonds of phenols with a good substrate range. Furthermore, these bifunctional compounds can be used in a novel arylative annulation in the presence of Grignard reagents to provide chromeno-indole frameworks.
A novel one-pot base-promoted insertion of indolyl 2-alkynes into a C-C single bond of 1,3-diketones, followed by intramolecular aldol reaction and dehydrative aromatization is described. This reaction cascade leads to the construction of 2-indolyl phenols involving the formation of the C1-C2 and C3-C4 bonds of phenols resulting from the formal insertion process with a good substrate scope. Further, these bifunctional compounds were used in a novel arylative annulation in the presence of Grignard reagents to provide chromeno-indole frameworks.
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