Journal
ORGANIC LETTERS
Volume 19, Issue 24, Pages 6606-6609Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.7b03325
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Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [NRF-2015R1A4A1041036, NRF-2017R1A2B2002929]
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Homoisoflavonoids were formed in DMSO exclusively, and flavones were formed in t-AmOH when salicylaldehyde and alkynoic acids reacted with [Ru(p-cymene)Cl-2](2) and CsOAc. They were formed through C-H activation of salicylaldehyde and decarboxylative coupling of alkynoic acid. This reaction system showed good yields, broad substrate scope, and good functional group tolerance. It was found that chalcone was an intermediate in the formation of both homoisoflavonoid and flavone.
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