Subba Reddy BV, Rajashekhar Reddy M, Yarlagadda S, Ravikumar Reddy C, Ravi Kumar G, Yadav JS, Sridhar B. Cooperative Multicatalytic System for the One-Pot Synthesis of Octahydrospiro-β-carbolines.
J Org Chem 2015;
80:8807-14. [PMID:
26252740 DOI:
10.1021/acs.joc.5b01108]
[Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A domino cyclization of 3-((3-(2-aminophenyl)prop-2-ynylamino)methyl)but-3-en-1-ol with aldehydes has been accomplished employing 5 mol % of the Ph3PAuCl/AgSbF6/In(OTf)3 system to afford the corresponding octahydrospiro[pyran-4,4'-pyrido[3,4-b]indole] derivatives in good yields with high selectivity. This is the first report on the synthesis of spiro-β-carbolines through a multicatalytic cascade process.
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