The first Ritter-type reaction of alkylbenzenes with nitriles has been successfully achieved by the use of N-hydroxyphthalimide (NHPI) as a key catalyst. Thus, treatment of ethylbenzene with ammonium hexanitratocerate(IV) (CAN) in the presence of a catalytic amount of NHPI in EtCN under argon produced the corresponding amide in good selectivity.
1,2,3-TRIAZOLE-BASED PEPTIDOMIMETIC INTEGRIN INHIBITORS FOR THE DIAGNOSIS AND THERAPY OF TUMORS
申请人:Guarna Antonio
公开号:US20130040964A1
公开(公告)日:2013-02-14
The present invention refers to the field of chemical compounds bearing a 1,2,3-triazole ring of formula (I) and possessing guanidino and carboxylic groups or their isosteres, their preparation by Cu-catalyzed “click-chemistry”, and medical-diagnostic use in pathologies where angiogenesis is altered, for example pathologic conditions of tumor origin, tumor metastasis, osteoporosis, and rheumatoid arthritis.
Environmentally Benign Ritter Reaction Using Bismuth Salts as a Catalyst
作者:Masaharu Ueno、Ryo Kusaka、Satoshi D. Ohmura、Norikazu Miyoshi
DOI:10.1002/ejoc.201801882
日期:2019.2.28
We developed an environmentally benign Ritterreaction of alcohols with nitriles using a commercially available bismuth salt as a less harmful catalyst. The detailed reaction profiles revealed that consumption of the ether by-product as the reaction proceeded was the key for optimizing this reaction, and the yield of the target amide was improved by adding a small amount of water. This finding clearly