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.
Ru-Catalyzed Deoxygenative Transfer Hydrogenation of Amides to Amines with Formic Acid/Triethylamine
Pan, Yixiao,Luo, Zhenli,Xu, Xin,Zhao, Haoqiang,Han, Jiahong,Xu, Lijin,Fan, Qinghua,Xiao, Jianliang
supporting information, p. 3800 - 3806 (2019/07/12)
A ruthenium(II)-catalyzed deoxygenative transfer hydrogenation of amides to amines using HCO2H/NEt3 as the reducing agent is reported for the first time. The catalyst system consisting of [Ru(2-methylallyl)2(COD)], 1,1,1-tris(diphenylphosphinomethyl) ethane (triphos) and Bis(trifluoromethane sulfonimide) (HNTf2) performed well for deoxygenative reduction of various secondary and tertiary amides into the corresponding amines in high yields with excellent selectivities, and exhibits high tolerance toward functional groups including those that are reduction-sensitive. The choice of hydrogen source and acid co-catalyst is critical for catalysis. Mechanistic studies suggest that the reductive amination of the in situ generated alcohol and amine via borrowing hydrogen is the dominant pathway. (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.