期刊
ORGANIC LETTERS
卷 23, 期 14, 页码 5533-5538出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.1c01863
关键词
-
资金
- National Natural Science Foundation of China [22073043, 21833002, 21673110, 21903043]
- Fundamental Research Funds for the Central Universities [020514380243]
A borane-catalyzed sequential addition of terminal alkynes to para-substituted phenols has been developed, yielding ortho-propargylic alkylated phenols with congested quaternary carbons. Control experiments and DFT calculations suggest a sequential phenol alkenylation/hydroalkynylation process. The extension of this strategy to the construction of triaryl-substituted quaternary carbons demonstrates the broad utility of this method.
We have developed a borane-catalyzed sequential addition of terminal alkynes to para-substituted phenols, which affords a wide range of ortho-propargylic alkylated phenols bearing congested quaternary carbons. Control experiments combined with DFT calculations suggest that the reaction undergoes a sequential phenol alkenylation/hydroalkynylation process. Further extension of this strategy to the construction of triaryl-substituted quaternary carbons demonstrates the broad utility of this method.
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