De Luca L, Giacomelli G, Nieddu G. A Facile Approach to the Synthesis of Chiral 2-Substituted Benzofurans.
J Org Chem 2007;
72:3955-7. [PMID:
17419648 DOI:
10.1021/jo070142c]
[Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An effective route to chiral optically active 2-substituted benzofurans directly from carboxylic acids is reported. This procedure, which allows the preparation of alpha-alkyl-2-benzofuranmethanamines from N-protected alpha-amino acids without sensible racemization phenomena, proceeds in good yields under mild conditions with the help of microwave irradiation.
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