614-70-0Relevant articles and documents
Preparation method of 2, 2'-azino-bis(3-alkylbenzothiazoline-6-sulfonic acid) salt
-
Paragraph 0090; 0095, (2020/11/23)
The invention discloses a preparation method of a 2, 2'-azino-bis(3-alkylbenzothiazoline-6-sulfonic acid) salt. The raw materials used in the preparation method are easily available, and the price islow, the production cost can be greatly reduced while ensuring a high reaction yield, so that enlarged production is facilitated, meanwhile, the preparation method is different from the previous new preparation process, and the new preparation process is beneficial to academic research, industrial research and practice of ABTS in the field, so that the development of related technologies and related industrial economy in the field is promoted.
B(C6F5)3-Catalyzed Deoxygenative Reduction of Amides to Amines with Ammonia Borane
Pan, Yixiao,Luo, Zhenli,Han, Jiahong,Xu, Xin,Chen, Changjun,Zhao, Haoqiang,Xu, Lijin,Fan, Qinghua,Xiao, Jianliang
supporting information, p. 2301 - 2308 (2019/01/30)
The first B(C6F5)3-catalyzed deoxygenative reduction of amides into the corresponding amines with readily accessible and stable ammonia borane (AB) as a reducing agent under mild reaction conditions is reported. This metal-free protocol provides facile access to a wide range of structurally diverse amine products in good to excellent yields, and various functional groups including those that are reduction-sensitive were well tolerated. This new method is also applicable to chiral amide substrates without erosion of the enantiomeric purity. The role of BF3 ? OEt2 co-catalyst in this reaction is to activate the amide carbonyl group via the in situ formation of an amide-boron adduct. (Figure presented.).
Diethylenetriamine-Mediated Direct Cleavage of Unactivated Carbamates and Ureas
Noshita, Megumi,Shimizu, Yuhei,Morimoto, Hiroyuki,Ohshima, Takashi
supporting information, p. 6062 - 6065 (2016/12/09)
Diethylenetriamine is effective for the direct cleavage of unactivated carbamates and ureas without additional reagents and catalysts. Various carbamates and ureas were cleaved to afford products in good yield, and the reactions were not affected by air or moisture. Unique chemoselective cleavage of carbamate and urea in the presence of amides was also achieved.