A catalyst-free chemoselective trimerization reaction of readily available isocyanides is described. This domino reaction provides facile access to a wide range of 2-(indol-2-yl)-quinolines and 2-(indol-2-yl)-pyridines in moderate to excellent yields. A "head to head" heterodimerization of two isocyanides is proposed as the key step of this reaction.
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| http://dx.doi.org/10.1021/acs.orglett.1c03693 | DOI Listing |
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