Base-Free and Catalyst-Free Synthesis of Functionalized Dihydrobenzoxazoles via Vinylogous Carbonate to Carbamate Rearrangement

Das, Tamal Kanti ; Mondal, Santigopal ; Gonnade, Rajesh G. ; Biju, Akkattu T. (2017) Base-Free and Catalyst-Free Synthesis of Functionalized Dihydrobenzoxazoles via Vinylogous Carbonate to Carbamate Rearrangement Organic Letters, 19 (20). pp. 5597-5600. ISSN 1523-7060

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Official URL: http://doi.org/10.1021/acs.orglett.7b02733

Related URL: http://dx.doi.org/10.1021/acs.orglett.7b02733

Abstract

An unexpected, catalyst-free, and base-free intramolecular cyclization of N-aryloxyacrylate aldimines, under thermal conditions leading to the synthesis of functionalized dihydrobenzoxazoles, is reported. The reaction features a unique rearrangement of vinylogous carbonates to vinylogous carbamates resulting in a new carbon-oxygen and carbon-nitrogen bond construction. The reaction tolerates a broad range of functional groups and the desired products are formed in moderate to good yields.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society
ID Code:128633
Deposited On:03 Nov 2022 06:48
Last Modified:03 Nov 2022 06:48

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