Results 1 to 10 of about 56 (53)

Thiocyanation of Pyrazoles Using KSCN/K2S2O8 Combination

SynOpen, 2018
A convenient and practical thiocyanation of pyrazoles is reported employing a combination of KSCN and K2S2O8 in dimethyl sulfoxide (DMSO). The salient features of the present reaction include environmentally benign reagents and solvents, and simple ...
Chutima Kuhakarn
exaly   +3 more sources

Metal-Free Regioselective Thiocyanation of (Hetero) Aromatic C-H Bonds using Ammonium Thiocyanate: An Overview [PDF]

Journal of Chemistry Letters, 2020
(Hetero)aryl thiocyanates have been extensively used as dyes, insecticides, vulcanization accelerators, and building blocks in the synthesis of diverse organosulfur compounds.
Soma Majedi, Lakshmaiah Sreerama, Esmail Vessally, Farnaz Behmagham   +3 more
doaj   +1 more source

Synthesis of 3-thiocyanated chromones via TCCA/NH4SCN-mediated cyclization/thiocyanation of alkynyl aryl ketones

Green Synthesis and Catalysis, 2022
3-Thiocyanated chromones was conveniently synthesized from alkynyl aryl ketones using commercially available, inexpensive trichloroisocyanuric acid (TCCA) as oxidant and NH4SCN as thiocyanato (SCN) source.
Jiaxi Xiao, Zhenkang Ai, Xuemin Li, Sanqing Tao, Bingyue Zhao, Xiaofan Wang, Xinbo Wang, Yunfei Du   +7 more
doaj   +1 more source

Novel one-pot process for the synthesis of ethyl 2-imino-4-methyl-2,3-dihydrothiazole-5-carboxylates [PDF]

Journal of the Serbian Chemical Society, 2015
A facile one-pot two-step process for the synthesis of ethyl 2-imino-4-methyl-2,3-dihydrothiazole-5-carboxylates via the cyclocondensation of ethyl 2-thiocyanatoacetoacetate with a variety of hydrazine and hydrazide derivatives has been ...
Beyzaei Hamid, Aryan Reza, Moghadas Hadi
doaj   +1 more source

Electrooxidation Is a Promising Approach to Functionalization of Pyrazole-Type Compounds

Molecules, 2021
The review summarizes for the first time the poorly studied electrooxidative functionalization of pyrazole derivatives leading to the C–Cl, C–Br, C–I, C–S and N–N coupling products with applied properties.
Boris V. Lyalin, Vera L. Sigacheva, Anastasia S. Kudinova, Sergey V. Neverov, Vladimir A. Kokorekin, Vladimir A. Petrosyan   +5 more
doaj   +1 more source

A New Method for the Synthesis of 3-Thiocyanatopyrazolo[1,5-a]pyrimidines

Molecules, 2020
In this article, we demonstrate how an original effective “metal-free” and “chromatography-free” route for the synthesis of 3-thiocyanatopyrazolo[1,5-a]pyrimidines has been developed.
Vladimir A. Kokorekin, Sergey V. Neverov, Vera N. Kuzina, Vladimir A. Petrosyan   +3 more
doaj   +1 more source

Preparation of Arylthiocyanates Using N,N′-Dibromo-N,N′-bis(2,5-dimethylbenzenesulphonyl) ethylenediamine and N,NDibromo-2,5-dimethylbenzenesulphonamide in the Presence of KSCN as a Novel Thiocyanating Reagent

Molecules, 2001
N-Bromosulphonamides, synthesized via direct bromination of sulphonamides, react with several types of arene substrates in the presence of KSCN to afford aryl thiocyanates. The method appears to be generally applicable to benzenoid substrates with a wide
Ardeshir Khazaei, Abdolhamid Alizadeh, Ramin Ghorbani Vaghei   +2 more
doaj   +1 more source

Recent Advances in the Application of SelectfluorTMF-TEDA-BF4 as a Versatile Mediator or Catalyst in Organic Synthesis

Molecules, 2011
SelectfluorTM F-TEDA-BF4 (1-chloromethyl-4-fluoro-1,4-diazoniabicyclo [2.2.2]octane bis(tetrafluoroborate) is not only one of the most efficient and popular reagents for electrophilic fluorination, but as a strong oxidant is also a convenient mediator or
Stojan Stavber
doaj   +1 more source

Cationic Selenuranes – Bench‐Stable Sources of Se(III) Radicals

Angewandte Chemie, Volume 137, Issue 44, October 27, 2025.
We present the synthesis of cationic selenurane salts via oligomerization of dibenzoselenophene‐based radical cations, allowing the formation of radicals without external activation. The salts can be prepared on a multigram scale and stored as solids for more than a month at ambient conditions.
Kirill Zhiliaev, Boris Maryasin, Hanspeter Kählig, Marcos Gil‐Sepulcre, Javier Mateos   +4 more
wiley   +2 more sources

Electrochemical C-H thiocyanation of BODIPYs: Two birds with one stone of KSCN

Green Synthesis and Catalysis
An efficient electrochemical C–H thiocyanation of BODIPYs was developed by using potassium thiocyanide as the source of thiocyanation. The straightforward C–H thiocyanation protocol possesses many advantages: metal-free, oxidant-free conditions ...
Kui Liu, Jia-Xiu Liu, Shi-Jie Bo, Zhuo Chen, Weisi Guo, Li-Rong Wen, Lin-Bao Zhang   +6 more
doaj   +1 more source