Palladium-Catalyzed Microwave-Assisted Amination of 1-Bromonaphthalenes and 5- and 8-Bromoquinolines
摘要:
1-Aminonaphthalenes and 5- and 8-aminoquinolines were rapidly prepared from the respective aryl bromides in good yields by Pd-catalyzed aryl amination under microwave conditions. Consistent improvements in yields over those obtained under standard conditions were seen with quinoline substrates. In the cases where 5-bromo-8-cyanoquinoline was used as a substrate, no desired products were obtained under standard conditions with a number of different primary and secondary amines. However, microwave conditions provided the desired products in good to excellent yields.
The present invention relates to bicyclic compounds according to formula I, pharmaceutical compositions containing such compounds and methods of using such compounds in the treatment of androgen receptor-associated conditions, such as age-related diseases, for example sarcopenia,
wherein R
1
, R
2
, R
5
, X, Y and n are defined herein.
ferrocene aminophosphoxazoline ligands (f-amphox) have been successfully developed and used in iridium-catalytic asymmetric hydrogenation of simpleketones to afford corresponding enantiomerically enriched alcohols under mild conditions with superb activities and excellent enantioselectivities (up to 1 000 000 TON, almost all products up to >99% ee, full conversion). The resulting chiral alcohols and their
Iridium-Catalyzed Asymmetric Hydrogenation of Ketones with Accessible and Modular Ferrocene-Based Amino-phosphine Acid (f-Ampha) Ligands
作者:Jianfei Yu、Jiao Long、Yuhong Yang、Weilong Wu、Peng Xue、Lung Wa Chung、Xiu-Qin Dong、Xumu Zhang
DOI:10.1021/acs.orglett.6b03862
日期:2017.2.3
A series of tridentate ferrocene-based amino-phosphine acid (f-Ampha) ligands have been successfully developed. The f-Ampha ligands are extremely air stable and exhibited excellent performance in the Ir-catalyzed asymmetric hydrogenation of ketones (full conversions, up to >99% ee, and 500 000 TON). DFT calculations were performed to elucidate the reaction mechanism and the importance of the −COOH
Tetradentate ligands and metal complexes thereof for asymmetric catalysis
申请人:Boaz Warren Neil
公开号:US20060135804A1
公开(公告)日:2006-06-22
This invention relates to novel, substantially enantiomerically pure tetradentate ligands comprised of two phosphines and two secondary amines. These species have been used as ligands for metal catalysts for asymmetric reactions and have demonstrated good enantioselectivity, in particular as ruthenium complexes for asymmetric hydrogenation. Also disclosed are methods for making the ligands, corresponding catalyst complexes, and processes employing the ligands and catalysts. The ligands may be described by the general formula 1:
R
2
P-L
1
-NH-L
2
-NH-L
3
-PR
1
2
1