Reaction of Aminodihydropentalenes with HB(C6F5)2: The Crucial Role of Dihydrogen Elimination
摘要:
The aminodihydropentalene derivative la reacts with the Lewis acidic RB(C6F5)(2) boranes (2a-c) by C-C bond cleavage to yield the formal borylene insertion products 3. In contrast, 1a,b react with HB(C6F5)(2) at 55 degrees C by elimination of dihydrogen to yield the iminium-stabilized zwitterionic heterofulvenes 10a,b. The reaction pathways were studied by preparation of the kinetically controlled intermediates 7a,b and the thermodynamically controlled products 9a,b, monitored by variable-temperature NMR experiments, and supported by DFT calculations. The trapping reactions of 9a with HCl and PhCHO, respectively, led to the addition products 13 and 14. Compounds 3c, 7a,b, 10a,b, 11, 13, and 14 were characterized by X-ray diffraction.
[DE] VERFAHREN ZUR HERSTELLUNG VON alpha, beta-UNGESÄTTIGTEN AMIDVERBINDUNGEN [EN] METHOD FOR PRODUCTION OF DOLLAR G(A), DOLLAR G(B)-UNSATURATED AMIDE COMPOUNDS [FR] PROCEDE DE PRODUCTION DE COMPOSES AMIDE DOLLAR G(A), DOLLAR G(B)-INSATURES
[EN] TETRASUBSTITUTED ALKENE COMPOUNDS AND THEIR USE<br/>[FR] COMPOSÉS ALCÉNIQUES TÉTRASUBSTITUÉS ET LEUR UTILISATION
申请人:EISAI R&D MAN CO LTD
公开号:WO2016196342A1
公开(公告)日:2016-12-08
Disclosed herein are compounds, or pharmaceutically acceptable salts thereof, and methods of using the compounds for treating breast cancer by administration to a subject in need thereof a therapeutically effective amount of the compounds or pharmaceutically acceptable salts thereof. The breast cancer may be an ER-positive breast cancer and/or the subject in need of treatment may express a mutant ER-α protein.
4-addition and [3 + 2] cycloaddition reactions using chiral calcium species prepared from calcium isopropoxide and chiral bisoxazoline ligands have been developed. Glycine Schiff bases reacted with acrylic esters to afford 1,4-addition products, glutamic acid derivatives, in high yields with high enantioselectivities. During the investigation of the 1,4-addition reactions, we unexpectedly found that a [3
MODULATORS OF SESTRIN-GATOR2 INTERACTION AND USES THEREOF
申请人:Navitor Pharmaceuticals, Inc.
公开号:US20170114080A1
公开(公告)日:2017-04-27
The present invention provides compounds, compositions thereof, and methods of using the same.
本发明提供了化合物、其组合物以及使用相同的方法。
Copper(I)-Catalyzed Asymmetric 1,4-Conjugate Hydrophosphination of α,β-Unsaturated Amides
作者:Yan-Bo Li、Hu Tian、Liang Yin
DOI:10.1021/jacs.0c09654
日期:2020.11.25
hydrophosphination of α,β-unsaturated amides is accomplished by virtue of the strong nucleophilicity of copper(I)-PPh2 species, which provides an array of chiral phosphines bearing an amide moiety in high to excellent yields with excellent enantioselectivity. Furthermore, the dynamic kinetic resolution of unsymmetrical diarylphosphines (HPAr1Ar2) is successfully carried out through the copper(I)-catalyzed conjugate