Synthesis of some tetrahydronaphthyl- and flavanyl-coumarins
作者:Roy S. Shadbolt、David R. Woodward、Peter J. Birchwood
DOI:10.1039/p19760001190
日期:——
The synthesis is described of a number of 3-[3-(p-substituted phenyl)-1,2,3,4-tetrahydro-1-naphthyl]-4-hydroxycoumarins (7) and 3-(4′-substituted flavan-4-yl)-4-hydroxycoumarins (17), many of which show outstanding activity as anticoagulants against both Warfarin-resistant rats. The final stage in the syntheses involves the reaction of either 3-(p-substituted phenyl)-1,2,3,4-tetrahydro-1-naphthols
β‐Arylation of Racemic Secondary Benzylic Alcohols to Access Enantioenriched β‐Arylated Alcohols
作者:Wang Miao、Jinyu Zhang、Yanyan Yang、Weijun Tang、Dong Xue、Jianliang Xiao、Huaming Sun、Chao Wang
DOI:10.1002/anie.202306015
日期:2023.7.24
catalyst, the first example of β-arylation of secondary alcohols with aryl bromides has been developed via borrowing hydrogen catalysis enabled by an MPV type hydrogen transfer process. In addition, the enantioconvergent version of the reaction has also been realized under the catalysis of Pd and Ru, allowing for the transformation of racemic secondary alcohols into enantioenriched chiral alcohols with good