Zwitterionic Palladium Complexes: Room-Temperature Suzuki–Miyaura Cross-Coupling of Sterically Hindered Substrates in an Aqueous Medium
作者:Jhen-Yi Lee、Dabalina Ghosh、Jing-Yi Lee、Shih-Sheng Wu、Ching-Han Hu、Shuang-De Liu、Hon Man Lee
DOI:10.1021/om500834y
日期:2014.11.24
charge on the ligand ancillary. The pyridine ligand in the zwitterionic complexes can be facilely replaced by phosphine ligands. Seven of these newcomplexes were successfully characterized by X-ray crystallography. The zwitterionic phosphine complexes were highly efficient in catalyzing room-temperature Suzuki–Miyaura reactions between sterically hindered aryl chlorides and arylboronic acids in an aqueous
A trisphenol compound is expressed by formula (1), wherein R represents an alkyl group or alkoxyl group with 1 to 8 carbon atoms, phenyl group or hydroxyl group; R
1
represents an alkyl group or alkoxyl group with 1 to 8 carbon atoms, or phenyl group; R
2
represents an alkyl group or alkoxyl group with 1 to 8 carbon atoms; R
3
represents a hydrogen atom or alkyl group with 1 to 8 carbon atoms; a represents 0, 1, 2, or 3; b represents 1 or 2; and c and d represent 0, 1, 2, 3, or 4; where the sum of b and c is 5 or less; R's may be either the same or different when a is 2 or more; R
1
's may be either the same or different when c is 2 or more; and R
2
's may be either the same or different when d is 2 or more.
Suzuki-Miyaura Cross-Coupling Reaction Catalyzed by PEPPSI-Type 1,4-Di(2,6-diisopropylphenyl)-1,2,3-triazol-5-ylidene (<i>tz</i>IPr) Palladium Complex
作者:Jie Huang、Jong-Tai Hong、Soon Hyeok Hong
DOI:10.1002/ejoc.201201075
日期:2012.10.11
A 1,4-di(2,6-diisopropylphenyl)-1,2,3-triazol-5-ylidene (tzIPr)-based PEPPSI-typepalladiumcomplex was developed as an excellent precatalyst for the Suzuki–Miyauracross-couplingreaction. The complex showed high activity under mild conditions for the cross-couplingreactions between various types of aryl chlorides and aryl boronic acids regardless of the steric and electronic nature of the substrates
Synthetic method for multifunctionalized oligoarenes using pinacol esters of hydroxyphenylboronic acids
作者:Shunpei Ishikawa、Kei Manabe
DOI:10.1039/b603574d
日期:——
A synthetic method for multifunctionalized oligoarenes using rapid Suzuki–Miyaura coupling of pinacol esters of hydroxyphenylboronic acids and subsequent triflation of the hydroxy group was developed.
2-, 3- And 4-biphenyloxyaminoalkanes and related compounds, their preparation and uses, and pharmaceutical compositions containing them
申请人:SYNTEX (U.S.A.) INC.
公开号:EP0157652A1
公开(公告)日:1985-10-09
Compounds useful for treating inflammation, swelling and associated pain, and psoriasis, represented by the formula:
and the pharmaceutically acceptable acid addition salts thereof, wherein:
a is an integer of 0-3;
b is an integer of 0-2;
n is an integer of 3-12;
each X and each Y are independently-halo, -R1, -alkoxy, or-phenyl; and B is selected from:
and
in which
R' and R2 are independently H, alkyl or cycloalkyl;
R3 is H, alkyl or -CH2CH2OH; and
m is an integer of 3-8.
Novel compounds are those wherein n is at least 6 if both a and b are 0.
用于治疗炎症、肿胀及相关疼痛和牛皮癣的化合物,由式:及其药学上可接受的酸加成盐表示,其中:a 是 0-3 的整数;b 是 0-2 的整数;n 是 3-12 的整数;每个 X 和每个 Y 独立地是卤素、-R1、-烷氧基或苯基;B 选自:且其中 R' 和 R2 独立地是 H、烷基或环烷基;R3 是 H、烷基或-CH2CH2OH;且 m 是 3-8 的整数。 新型化合物是指如果 a 和 b 均为 0,则 n 至少为 6 的化合物。