Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 8, Pages 4043-4048Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202010845
Keywords
aromaticity; cross-coupling; palladium; reaction mechanisms; synthetic methods
Categories
Funding
- NSFC [21971093]
- International Joint Research Centre for Green Catalysis and Synthesis [2016B01017, 18JR3RA284, 18JR4RA003]
- 111 project
- Canada Research Chair (Tier I) foundation
- E.B. Eddy Endowment Fund
- CFI
- NSERC
- FQRNT
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This study presents a new method for palladium-catalyzed alkylation reactions of phenols with primary alcohols, using a dearomatization-rearomatization strategy with water as the only by-product. Various substituted phenols and primary alcohols are compatible with the standard reaction conditions.
Phenols are common precursors and core structures of a variety of industrial chemicals ranging from pharmaceuticals to polymers. However, the synthesis of site-specifically substituted phenols is challenging, and thus the development of new methods for this purpose would be highly desirable. Reported here is a protocol for palladium-catalyzed ortho-selective alkylation reactions of phenols with primary alcohols by a dearomatization-rearomatization strategy, with water as the sole by-product. Various substituted phenols and primary alcohols were compatible with the standard reaction conditions. The detailed mechanism of this transformation was also investigated.
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