Results 31 to 40 of about 319 (90)

Recent Synthetic Advances in C–H/N–H Functionalization of 1H‐Pyrazoles: Diverse Strategies Across Variously Substituted Scaffolds

The Chemical Record, Volume 25, Issue 12, December 2025.
Systematic overview of pyrazole functionalization reactions from C‐5 to N−H. It covers different strategies, from traditional cross‐coupling of prefunctionalized pyrazoles to more efficient direct functionalizations. This review briefly and systematically overviews C–H and N–H functionalization reactions of pyrazoles, aimed at creating new CC and C ...
Karolina Dzedulionytė Müldür, Asta Žukauskaitė, Algirdas Šačkus, Eglė Arbačiauskienė   +3 more
wiley   +1 more source

Enantioselective Organocatalyzed Direct α‑Thiocyanation of Cyclic β‑Ketoesters by N‑Thiocyanato­phthalimide

, 2018
A new electrophilic thiocyanation reagent, N-thiocyanatophthalimide, was synthesized and applied to the first example of catalytic asymmetric electrophilic α-thiocyanation of various cyclic β-ketoesters by the bifunctional cinchona alkaloid catalysis ...
Fu-Xue Chen (2397511), Hongquan Yin (4260535), Di Wu (23906), Pran Gopal Karmaker (4260541), Jiashen Qiu (4260532)   +4 more
core   +1 more source

Regioselective and facile oxidative thiocyanation of anilines and indoles with trans-3,5?dihydroperoxy-3,5?dimethyl?1,2?dioxolane [PDF]

, 2014
Oxidative potential of trans3,5dihydroperoxy3,5dimethyl1,2dioxolane (DHPODMDO) has been explored in the facile thiocyanation of anilines and indoles through the efficient and in situ generation of SCN+ ion from sodium thiocyanate.
Najminejad, Zohreh, Maryam Golbaghi, Golbaghi, Maryam, Davood Azarifar, Pirveisian, Mahtab, Mahtab Pirveisian, Azarifar, Davood, Zohreh Najminejad   +7 more
core   +1 more source

Molecular Iodine‐Mediated Functionalization of α‐Carbonyl Sulfoxonium Ylides with Thiocyanates, Xanthates, and Dithiocarbamates

European Journal of Organic Chemistry, Volume 28, Issue 33, September 20, 2025.
A method for synthesizing α‐xanthates, α‐thiocyanates, and α‐dithiocarbamates has been developed. By employing molecular iodine and the potassium salts of xanthates, thiocyanate, and dithiocarbamates, a wide range of products is obtained, with yields reaching up to 83%. Sulfoxonium ylides derived from esters, ketones, amides, heterocycles, and steroids
Kauê C. Capellaro, Antonio C. B. Burtoloso   +1 more
wiley   +1 more source

K2S2O8-mediated regio- and stereo-selective thiocyanation of enamides with NH4SCN

, 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 stereoselective manner.
Wang, Qiyang, Zhang, Yanan, Gu, Qingyun, Ban, Yingguo, Zhao, Yu, Zeng, Xiaobao, Wang, Xin, Liu, Tianqing (Michelle) (R20191), Ling, Yong, Dai, Wenjing   +9 more
core   +1 more source

Advances in Enaminomaleimides Chemistry: Synthesis, Chemical Applications, and Perspectives

ChemistryEurope, Volume 3, Issue 5, September 18, 2025.
Enaminomaleimides are versatile building blocks for the construction of functionalized heterocycles. Their unique nucleophilic character, contrasting with the classical electrophilic nature of maleimides, enables diverse synthetic applications, showing promising potential in both materials science and medicinal chemistry.
Adrián López‐Francés, Birane Diop, Xingyu Jiang, Jean Rodriguez, Muriel Amatore, Thierry Constantieux   +5 more
wiley   +1 more source

Visible Light-Induced Thiocyanation of Enaminone C–H Bond to Access Polyfunctionalized Alkenes and Thiocyano Chromones

, 2019
The visible light induced C–H bond thiocyanation on the α-site of tertiary enaminones has been realized under metal-free, photocatalytic conditions in the presence of Rose Bengal, which enables the synthesis of thiocyanated alkene derivatives and ...
Yong Gao (29929), Jie-Ping Wan (1393846), Yunyun Liu (538796)   +2 more
core   +1 more source

Mechanochemical Approach for Metal‐Free Regioselective C5‐Sulfenylation of Imidazo[2,1‐b]Thiazoles

ChemSusChem, Volume 18, Issue 16, August 6, 2025.
This study presents a mechanochemical approach for the metal‐free, regioselective C5‐sulfenylation of imidazo[2,1‐b]thiazoles using bis(trifluoroacetoxy)iodo]benzene and aryl methyl sulfides. The method, performed under solvent‐free ball‐milling conditions, provides an efficient, environmentally friendly alternative to conventional synthesis, achieving
Xinya Liu, Valentin Dorokhov, Olivier Provot, Christine Tran, Pascal Retailleau, Jean‐François Soulé, Abdallah Hamze   +6 more
wiley   +1 more source

Metal-Free Thiocyanation of Imidazoheterocycles through Visible Light Photoredox Catalysis

, 2016
A visible light mediated, metal-free process for the thiocyanation of imidazoheterocycles has been developed using eosin Y as a photoredox catalyst under ambient air at room temperature.
Subhajit Mishra (1600120), Monoranjan Ghosh (1600117), Shubhanjan Mitra (1663627), Alakananda Hajra (1600114)   +3 more
core   +1 more source

Two-step synthesized sulfonic acid functionalized imidazolium thiocyanate solid acid catalyst for thiocyanation of various electron rich arenes by metal-free method in water

, 2022
An eco-friendly, highly efficient, and novel sulfonic acid functionalized imidazolium thiocyanate (Imidazole-SO3H)/SCN and sulfonic acid functionalized imidazolium chloride (Imidazole-SO3H)/Cl solid acid catalyst were successfully synthesized.
Sobhan Rezayati (10870219), Ali Ramazani (556889), Zahra Naserifar (12255715)   +2 more
core   +1 more source