Zwitterion-Catalyzed Deacylative Dihalogenation of β-Oxo Amides
摘要:
alpha,alpha-Dihalo-N-arylacetamides are commonly used as intermediates in various organic reactions. In the study described here, a catalytic synthesis of alpha,alpha-dihalo-N-arylacetamides from beta-oxo amides was developed using zwitterionic catalysts and N-halosuccinimides as the halogen sources. The corresponding alpha,alpha-dihalo-N-arylacetamides were obtained in good to excellent yields, and no aromatic halogenated side products were detected. The reaction conditions were mild, and no strong base or acid was required.
在我们关于传染病的工作过程中,我们被引导准备了6-溴-2-氯-4-甲基喹啉作为起始原料。由于文献中出人意料的报道很少,因此对该化合物的两个合成步骤进行了研究。该合成涉及β-酮酸酯和4-溴苯胺之间的缩合,以及将所得的苯胺环化成6-溴喹啉-2(1 H)-一,也称为克诺尔反应。该¹第一步的1 H NMR监测使我们能够优化导致苯胺的条件,而不会出现替代的巴豆酸酯。为了说明我们的发现的范围,制备了一些具有电子吸引基团的额外的酸酐。对它们环化的研究表明,这第二步支配着一些意想不到的空间效应。除了纠正该化学中的一些说法外,该研究还导致了三步制备6-溴-2-氯-4-甲基喹啉的步骤,而4-溴苯胺的总收率为48%。 酰化-环化-杂环-喹啉-碳正离子化
[EN] PYRROLO [2, 3-B] PYRIDINES OR PYRROLO [2, 3-B] PYRAZINES AS HPK1 INHIBITOR AND THE USE THEREOF<br/>[FR] PYRROLO [2, 3-B] PYRIDINES OU PYRROLO [2, 3-B] PYRAZINES COMME INHIBITEUR DE HPK1 ET LEUR UTILISATION
申请人:BEIGENE LTD
公开号:WO2019238067A1
公开(公告)日:2019-12-19
Disclosed herein is a compound of Formula (AIII) or (III), or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof, and pharmaceutical compositions comprising thereof. Also disclosed is a method of treating HPK1 related disorders or diseases by using the compound disclosed herein.
Structure-Based Optimization of Small Molecule Human Galactokinase Inhibitors
作者:Li Liu、Manshu Tang、Rajan Pragani、Frank G. Whitby、Ya-qin Zhang、Bijina Balakrishnan、Yuhong Fang、Surendra Karavadhi、Dingyin Tao、Christopher A. LeClair、Matthew D. Hall、Juan J. Marugan、Matthew Boxer、Min Shen、Christopher P. Hill、Kent Lai、Samarjit Patnaik
DOI:10.1021/acs.jmedchem.1c00945
日期:2021.9.23
DAVE, M. P.;PATEL, J. M.;LANGALIA, N. A.;THAKER, K. A., J. INST. CHEM., INDIA, 1985, 57, N 1, 31
作者:DAVE, M. P.、PATEL, J. M.、LANGALIA, N. A.、THAKER, K. A.
DOI:——
日期:——
On the Knorr Synthesis of 6-Bromo-4-methylquinolin-2(1H)-one
6-bromo-2-chloro-4-methylquinoline as a starting material. Since surprisingly little has been reported in the literature, the two synthetic steps to this compound were investigated. The synthesis involves a condensation between β-keto esters and 4-bromoaniline and the cyclization of the resulting anilides into 6-bromoquinolin-2(1H)-one, otherwise known as the Knorr reaction. The ¹H NMR monitoring of the first
在我们关于传染病的工作过程中,我们被引导准备了6-溴-2-氯-4-甲基喹啉作为起始原料。由于文献中出人意料的报道很少,因此对该化合物的两个合成步骤进行了研究。该合成涉及β-酮酸酯和4-溴苯胺之间的缩合,以及将所得的苯胺环化成6-溴喹啉-2(1 H)-一,也称为克诺尔反应。该¹第一步的1 H NMR监测使我们能够优化导致苯胺的条件,而不会出现替代的巴豆酸酯。为了说明我们的发现的范围,制备了一些具有电子吸引基团的额外的酸酐。对它们环化的研究表明,这第二步支配着一些意想不到的空间效应。除了纠正该化学中的一些说法外,该研究还导致了三步制备6-溴-2-氯-4-甲基喹啉的步骤,而4-溴苯胺的总收率为48%。 酰化-环化-杂环-喹啉-碳正离子化
Zwitterion-Catalyzed Deacylative Dihalogenation of β-Oxo Amides
alpha,alpha-Dihalo-N-arylacetamides are commonly used as intermediates in various organic reactions. In the study described here, a catalytic synthesis of alpha,alpha-dihalo-N-arylacetamides from beta-oxo amides was developed using zwitterionic catalysts and N-halosuccinimides as the halogen sources. The corresponding alpha,alpha-dihalo-N-arylacetamides were obtained in good to excellent yields, and no aromatic halogenated side products were detected. The reaction conditions were mild, and no strong base or acid was required.