期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 20, 期 38, 页码 7650-7657出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ob01267g
关键词
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资金
- Russian Science Foundation [19-13-00223]
A convenient protocol for assembling internal alkynes from tertiary propargyl alcohols and (het)aryl halides has been developed, using Pd- and phosphine-free catalysts. The method involves the base-promoted retro-Favorskii fragmentation and Cu-catalyzed C(sp)-C(sp(2)) cross-coupling. The procedure is practical and cost-effective, as it uses inexpensive reagents and exhibits good functional group tolerance.
A convenient Pd- and phosphine-free protocol for assembling internal alkynes from tertiary propargyl alcohols and (het)aryl halides has been developed. The proposed tandem approach includes the base-promoted retro-Favorskii fragmentation followed by Cu-catalyzed C(sp)-C(sp(2)) cross-coupling. The use of inexpensive reagents (e.g. a catalyst, additives, a base, and a solvent) and good functional group tolerance make the procedure practical and cost-effective. The synthetic utility of the method was demonstrated by a smooth alkynylation of vinyl iodides derived from natural steroidal hormones.
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