Wei HZ, Li QZ, Wei Y, Shi M. Rapid construction of cyclopenta[
b]naphthalene frameworks from propargylic alcohol tethered methylenecyclopropanes.
Org Biomol Chem 2020;
18:7396-7400. [PMID:
32930310 DOI:
10.1039/d0ob01732a]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We have developed a new synthetic methodology for the rapid construction of cyclopenta[b]naphthalene frameworks from the reaction of propargylic alcohol tethered methylenecyclopropanes with mesyl chloride in the presence of triethylamine through cascade cyclization. The reaction can be performed under mild conditions without the use of transition metals, affording the target products in moderate to good yields, and this cyclization reaction process can be scaled up to a gram-scale synthesis.
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