6097-27-4Relevant articles and documents
K2S2O8-mediated regio- And stereo-selective thiocyanation of enamides with NH4SCN
Gu, Qingyun,Wang, Qiyang,Dai, Wenjing,Wang, Xin,Ban, Yingguo,Liu, Tianqing,Zhao, Yu,Zhang, Yanan,Ling, Yong,Zeng, Xiaobao
, p. 2512 - 2516 (2021)
A direct and straightforward thiocyanation of enamides with NH4SCN under metal-free conditions has been accomplished. A variety of (E)-β-thiocyanoenamides are readily produced in a regio- and stereo-selective manner. The protocol features mild reaction conditions, good functional group tolerance and operational simplicity. The potential utility of this strategy was further demonstrated by transformation of thiocyanate into thiotetrazole-containing compounds and a Pd-catalyzed cross-coupling reaction to afford six- or seven-membered sulfur-containing heterocycles. Mechanistic insights into the reaction indicate that the reaction may proceedviaa radical mechanism.
Boron-doped TiO2(B-TiO2): visible-light photocatalytic difunctionalization of alkenes and alkynes
Hosseini-Sarvari, Mona,Valikhani, Atefe
supporting information, p. 12464 - 12470 (2021/07/25)
Boron-doped TiO2(B-TiO2) was prepared, characterized, and successfully applied as a reusable, inexpensive, available, and heterogeneous nanophotocatalyst under visible light for a novel method of construction of phenacyl thiocyanate compounds from double or triple bonds. Impressive aspects of this project are obtaining the desired compounds in a short time, using a renewable energy source, and using a catalyst with easy extraction that is solvent-safe, and without the use of any oxidants, bases, and ligands, or harsh conditions. This is the first report of the construction of phenacyl thiocyanates through this photocatalytic method under visible light.
α-Selective C(sp3)-H Thio/Selenocyanation of Ketones with Elemental Chalcogen
Li, Jin-Cheng,Gao, Wen-Xia,Liu, Miao-Chang,Zhou, Yun-Bing,Wu, Hua-Yue
, p. 17294 - 17306 (2021/12/02)
A facile method is disclosed for the synthesis of α-thio/selenocyanato ketones through regioselective C-H thio/selenocyanation of ketones. The advantages include the use of easily available starting materials, high efficiency, simple operation, and easy scale-up. Control experiments provide evidence that the reaction proceeded via a radical way, while kinetic isotope effect experiments reveal that the cleavage of the C-H bond serves as the rate-limiting step.