CuI/4-Hydro-<scp>l</scp>-proline as a More Effective Catalytic System for Coupling of Aryl Bromides with <i>N</i>-Boc Hydrazine and Aqueous Ammonia
作者:Liqin Jiang、Xu Lu、Hui Zhang、Yongwen Jiang、Dawei Ma
DOI:10.1021/jo9006738
日期:2009.6.19
CuI/4-hydroxy-l-proline-catalyzed coupling of aryl bromides and N-Boc hydrazine takes place in DMSO at 80 °C to give N-aryl hydrazides. When aryl iodides are employed, this reaction completes at 50 °C and no ligand is required. Under the catalysis of CuI/4-hydroxy-l-proline, the coupling reaction of aqueousammonia with aryl bromides proceeds smoothly at 50 °C to afford primary arylamines. In this
CuI / 4-羟基-1-脯氨酸催化的芳基溴化物与N- Boc肼的偶合反应在DMSO中于80°C进行,得到N-芳基酰肼。当使用芳基碘化物时,该反应在50℃下完成并且不需要配体。在CuI / 4-羟基-1-脯氨酸的催化下,氨水与芳基溴化物的偶联反应在50℃下顺利进行,得到伯芳基胺。在这种情况下,发现K 2 CO 3是比Cs 2 CO 3更好的碱。这些过程允许组装N带有多种官能团的-芳基酰肼和伯芳基胺包括羟基,胺基,三氟甲基,酯基,硝基和酮。
Dihydrobenzoindazoles
申请人:Timmers Cornelis Marius
公开号:US20110028451A1
公开(公告)日:2011-02-03
The invention relates to benzoindazole derivatives according to general Formula I
or a pharmaceutically acceptable salt thereof. The compounds can be used for the treatment of infertility.
The invention relates to benzoindazole derivatives according to general Formula I or a pharmaceutically acceptable salt thereof. The compounds can be used for the treatment of infertility.
该发明涉及通式I所示的苯并咪唑衍生物或其药用可接受的盐。这些化合物可用于治疗不孕症。
PYRAZOLE COMPOUNDS AS MODULATORS OF FSHR AND USES THEREOF
申请人:YU Henry
公开号:US20160152626A1
公开(公告)日:2016-06-02
The present invention relates to pyrazole compounds, and pharmaceutically acceptable compositions thereof, useful as positive allosteric modulators of follicle stimulating hormone receptor (FSHR).
本发明涉及吡唑化合物及其药学上可接受的组合物,作为卵泡刺激素受体(FSHR)的正向变构调节剂。
Enantioselective Synthesis of N–N Amide–Pyrrole Atropisomers via Paal–Knorr Reaction
作者:Yuanlin Wei、Fan Sun、Guofeng Li、ShiYu Xu、Ming Zhang、Liang Hong
DOI:10.1021/acs.orglett.3c03280
日期:2024.3.29
we present a highly efficient enantioselective synthesis of monoheteroaryl N–N atropisomers via an asymmetric Paal–Knorr reaction, affording a diverse array of N–N amide–pyrrole atropisomers with excellent enantioselectivities. Gram-scale synthesis and post-transformations of the product demonstrated the synthesis utility of this method. Racemization experiments confirmed the configurational stability