Yong Ji, Pinhua Li, Xiuli Zhang
May 29, 2013
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0
Influential Citations
28
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Journal
Organic & biomolecular chemistry
Abstract
An intramolecular cyclization of 2-(gem-dibromovinyl)phenols(thiophenols) to give 2-bromobenzofurans(thiophenes) in the presence of a trace amount of Cu (0.0064 mol%, 25 ppm) has been developed. The reaction provides the desired products in excellent yields under fluoride-free and mild reaction conditions and with a TON (turnover number) of up to 1.5 × 10(4).