Zhang J, Chen L, Dong Y, Yang J, Wu Y. A Cu
2O/TBAB-promoted approach to synthesize heteroaromatic 2-amines
via one-pot cyclization of aryl isothiocyanates with
ortho-substituted amines in water.
Org Biomol Chem 2020;
18:7425-7430. [PMID:
32936165 DOI:
10.1039/d0ob01431a]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient approach to synthesize heteroaromatic 2-amines from one-pot desulfurization/dehydrogenative cyclization of aryl isothiocyanates with ortho-substituted amines in water was developed. This approach tolerated a wide range of functional groups on the aromatic ring, providing a practical and environment-friendly process to synthesize heteroaromatic 2-amines in moderate to excellent yields. A plausible mechanism was proposed and the role of TBAB and Cu2O in the present strategy was suggested with the help of ESI mass spectrometry.
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