Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 81, Issue 3, Pages 1263-1268Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.5b02575
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Funding
- National Natural Science Foundation of China [21572075, 21172085]
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A simple and one-pot synthesis of multisubstituted benzimidazoles by a Ugi 4CC/catalytic aza-Wittig sequence was developed. The reaction of 2-aminobenzoyl azide 2, aldehyde 3, acid 4, and isocyanide 5 produced the benzimidazoles 8 in moderate to good yields via a sequential Ugi condensation and catalytic aza-Wittig in the presence of a catalytic amount of phospholene oxide.
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