Highly efficient iodine-catalyzed hydroarylation of arenes with styrenes
作者:Cheng-Ming Chu、Wan-Ju Huang、Ju-Tsung Liu、Ching-Fa Yao
DOI:10.1016/j.tetlet.2007.07.178
日期:2007.9
Iodine mediates the hydroarylation of styrenes with arenes and heteroarenes to afford 1,1-diarylalkanes in good to high yields. Details regarding the substrate scope and selectivity of this hydroarylation reaction are discussed.
Process for the preparation of substituted phenols
申请人:Daicel Chemical Industries, Ltd.
公开号:EP1967505A1
公开(公告)日:2008-09-10
A substituted phenolic compound is prepared by oxidizing a substituted diarylethane compound with oxygen in the presence of a nitrogen-containing cyclic compound, and treating the oxidized product with an acid. The nitrogen-containing cyclic compound includes, as a constituent of its ring, a skeleton represented by following Formula (I):
wherein X is oxygen atom or an -OR group, where R is hydrogen atom or a hydroxyl-protecting group. The substituted diarylethane compound is represented by following Formula (1):
wherein each of Ring Ar1 and Ring Ar2 is independently a monocyclic or polycyclic aromatic carbocyclic ring; Y1 is an electron-donating group; Y2 is an electron-withdrawing group; "p" is an integer of 1 or more; and "q" is an integer of 0 or more. The substituted phenolic compound is represented by following Formula (2):
wherein Ring Ar1, Y1, and "p" are as defined above.
Regiodivergent DH or HD Addition to Alkenes: Deuterohydrogenation versus Hydrodeuterogenation
作者:Luomo Li、Gerhard Hilt
DOI:10.1021/acs.orglett.0c00213
日期:2020.2.21
utilizing selectively deuterated dihydroaromatic compounds, which were generated by cobalt catalysis. The reaction was initiated by catalytic amounts of BF3·Et2O by abstracting hydride or deuteride ions from the respective dihydroaromatic reducing agents and led to a highly regioselective incorporation of deuterium and hydrogen at the desired positions of the starting material.