An Organocatalytic Cascade Approach toward Polysubstituted Quinolines and Chiral 1,4-Dihydroquinolines-Unanticipated Effect of N-Protecting Groups
作者:Xinshuai Zhang、Xixi Song、Hao Li、Shilei Zhang、Xiaobei Chen、Xinhong Yu、Wei Wang
DOI:10.1002/anie.201202161
日期:2012.7.16
of a divergent organocatalytic aza‐Michael/aldol cascade process towardquinolines and 1,4‐dihydroquinolines depends on the choice of the N‐protecting group (see scheme; TEA=triethylamine, TMS=trimethylsilyl). Use of an electron‐donating sulfonyl group results in an unanticipated aza‐Michael/aldol/aromatization cascade to give polysubstitutedquinolines (right). In contrast, chiral 1,4‐dihydroquinolines
Denitrogenative Suzuki and carbonylative Suzuki coupling reactions of benzotriazoles with boronic acids
作者:Yuanhao Wang、Yunfei Wu、Yuanhe Li、Yefeng Tang
DOI:10.1039/c7sc00367f
日期:——
The unprecedented palladium-catalyzed denitrogenative Suzuki and carbonylative Suzukicoupling reactions of benzotriazoles with boronic acids have been realized, which afforded structurally diverse ortho-amino-substituted biaryl and biaryl ketone derivatives. Key to...
Antiinflammatory fluoroalkanesulfonanilides. 3. Other fluoroalkanesulfonamido diaryl systems
作者:G. G. I. Moore、J. K. Harrington、K. F. Swingle
DOI:10.1021/jm00238a013
日期:1975.4
A series of isosteres of 3-benzoyltrifluoromethanesulfonanilide involving alternatives to the carbonyl linking group was synthesized and screened for antiinflammatory activity in the carrageenan rat paw edema test. The systems examined were of the type m-CF3SO2NH-C6H4-X-C6H5, where X was -CROH-, -CHR-, -CH(OH)CH2-, -COCH2-, -CH2CO-, greater than C equal to CR2, -CR equal to CH, -C identical to C-, -CH2CH2-, CONH-, -NR-, -O-, -S(O)n- (n equal to 0,1,2), and carbon-carbon single bond. Many ortho and para derivatives were also tested. Several of these new trifluoromethanesulfonanilides proved equipotent with phenylbutazone. The effects on the anticarrageenan activity of both the nature and ring position of X are discussed.