17467-18-4Relevant articles and documents
Transition-metal-free visible Light-promoted photoredox oxidative dehydrogenative cyclization:expeditious approach to 1,2,4-thiadiazoles
Chen, Junmin,Sheng, Shouri,Xiong, Zhiqiang,Zhong, Qihao
supporting information, (2021/09/06)
A novel visible-light-catalyzed oxidative N-S bond formation for the synthesis of 3,5-disubstituted 1,2,4-thiadiazoles has been developed. This protocol features a metal-free approach, green oxidant, room temperature process, broad substrate scope, good functional group tolerance, excellent yields and a one-pot reaction without the isolation of the intermediates.
Co-Catalyzed Intramolecular S-N Bond Formation in Water for 1,2-Benzisothiazol-3(2H)-ones and 1,2,4-Thiadiazoles Synthesis
Yang, Liting,Song, Lijuan,Tang, Shanyu,Li, Longjia,Li, Heng,Yuan, Bingxin,Yang, Guanyu
, p. 1281 - 1285 (2019/01/14)
An efficient and versatile Co-catalyzed intramolecular S-N bond formation in water to synthesize 1,2-benzisothiazol-3(2H)-one and 1,2,4-thiadiazoles derivatives in good to excellent yields was developed. The transformation showed great tolerance with a broad range of substituents. The mother liquor was able to be recycled 6 times with minor loss in product yield.
Copper-Catalyzed Aerobic Oxidative [3+2] Annulation for the Synthesis of 5-Amino/Imino-Substituted 1,2,4-Thiadiazoles through C-N/N-S Bond Formation
Yu, Wentao,Huang, Yubing,Li, Jianxiao,Tang, Xiaodong,Wu, Wanqing,Jiang, Huanfeng
, p. 9334 - 9343 (2018/07/30)
A copper-catalyzed aerobic oxidative annulation reaction of 2-aminopyridine/amidine with isothiocyanate has been reported. This strategy involving C-N/N-S bond formations provides various 5-amino/imino-substituted 1,2,4-thiadiazole derivatives under a Cu/O2 catalytic system. This method has demonstrated high reactivity, mild reaction conditions, and a broad substrate scope. Furthermore, the synthetic utilities of the approach are demonstrated by further modifications.
Copper-catalyzed synthesis of 3-substituted-5-amino-1,2,4-thiadiazoles via intramolecular N-S bond formation
Kim, Ha-Young,Kwak, Se Hun,Lee, Gee-Hyung,Gong, Young-Dae
, p. 8737 - 8743 (2015/01/08)
A copper-catalyzed N-S bond formation was utilized to produce 3-substituted-5-amino-1,2,4-thiadiazoles from imidoyl thioureas obtained by reaction of amidine hydrochlorides with isothiocyanates. Moreover, the 1,2,4-thiadiazoles were generated through a on
Amidrazones. 6(1). Synthesis of 1,2,4-Thiadiazoles by Thermolysis of N3-Thiocarbamoylamidrazone Ylides
Smith, Richard F.,Feltz, Timothy P.
, p. 201 - 203 (2007/10/02)
Reaction of N3-unsubstituted amidrazone ylides (1a and 1b) with alkyl or aryl isothiocyanates gives N3-thiocarbamoylamidrazone ylides (2).Thermolysis of 2 gives 3-alkyl(or aryl)-5-alkyl(or aryl)amino-1,2,4-thiadiazoles (a-i).
New Synthesis of 1,2,4-Thiadiazoles
Lin, Yang-i,Lang, S. A.,Petty, Sharon R.
, p. 3750 - 3753 (2007/10/02)
A new synthesis of 1,2,4-thiadiazoles has been developed.N'-(Thioaroyl)- (and N'-arylthiocarbamoyl-) N,N-dimethylamidines, which were prepared in excellent yields by reactions of thioamides (and thioureas) with N,N-dimethylalkanamide dimethyl acetals, rea