Synthesis of Polysubstituted Phenols by Rhodium‐Catalyzed C−H/Diazo Coupling and Tandem Annulation
作者:Min Liu、Kelu Yan、Jiangwei Wen、Xue Li、Xiaoyu Wang、Fengjie Lu、Xiu Wang、Hua Wang
DOI:10.1002/adsc.202001456
日期:2021.3.29
rhodium(III)‐catalyzed C−H/diazo coupling and tandem annulation of 3‐oxopent‐4‐enenitriles have been proposed for the synthesis of polysubstituted phenols. Most products of phenols are obtained in good yields. Several preliminary mechanistic studies and derivatization reactions of phenol products were also performed. This method offers an alternative approach for the synthesis of useful diverse phenols.
Compounds of formula
and pharmaceutically acceptable salts thereof are described, as well as the pharmaceutical compositions containing said compounds and their pharmaceutically acceptable salts, and the use of said compounds and pharmaceutical compositions for the treatment, control or amelioration of proliferative diseases, including cancer, Down syndrome or early onset Alzheimer's disease.
Rh(III)-Catalyzed C–H Activation of Benzoylacetonitriles and Tandem Cyclization with Diazo Compounds to Substituted Benzo[<i>de</i>]chromenes
作者:Feifei Fang、Chunmei Zhang、Chaofan Zhou、Yazhou Li、Yu Zhou、Hong Liu
DOI:10.1021/acs.orglett.8b00103
日期:2018.4.6
Rh (III)-catalyzed C–H activation of benzoylacetonitriles in coupling with diazocompounds was developed to synthesize diversified substituted benzo[de]chromenes via a formal (4 + 2) cycloaddition with a diazocompound and subsequent tandem (4 + 2) cycloaddition with another diazocompound. Intriguingly, synthesis of substituted benzo[de]chromenes and their decarboxylation products could be realized
Rh(III)催化与重氮化合物偶合的苯甲酰基乙腈的C–H活化反应是通过与重氮化合物的正式(4 + 2)环加成反应和随后的串联(4 + 2)环加成反应,合成出多种取代的苯并[ de ]色烯。与另一种重氮化合物。有趣的是,通过控制反应条件,可以实现取代苯并[ de ]二甲基苯酮及其脱羧产物的合成。这些反应具有广泛的底物范围,中等至良好的产率,以及较高的区域选择性。
CARBOXYLIC ACID ARYL AMIDES
申请人:Dominique Romyr
公开号:US20120184548A1
公开(公告)日:2012-07-19
Compounds of formula
and pharmaceutically acceptable salts thereof are described, as well as the pharmaceutical compositions containing said compounds and their pharmaceutically acceptable salts, and the use of said compounds and pharmaceutical compositions for the treatment, control or amelioration of proliferative diseases, including cancer.
Herein an efficient Pd-catalyzed asymmetricallylicsubstitution cascade of both (E)- and (Z)-but-2-ene-1,4-diyl dimethyl dicarbonates with α-substituted cyano ketones is described for the preparation of chiral 2,3-dihydrofurans in up to 97% yield with 98% ee. A suggested steric control process has been proposed to illustrate the differences in enantioselectivity between the reactions of (E)- and (Z)-allyl