56592-97-3

Upstream product

• 108-85-0 1-bromocyclohexane 
• 108-94-1 cyclohexanone 
• 60669-49-0 Cyclohexylselenocyanat 
• 116315-93-6 cyclohexaneselenol 
• 105398-69-4 Cyclohexanecarboxylic acid 2-thioxo-2H-pyridin-1-yl ester 
• 953-91-3 cyclohexyl tosylate 
• 6407-39-2 N-cyclohexylidenebutylamine 
• 542-18-7 cyclohexyl chloride 
• 98-89-5 Cyclohexanecarboxylic acid 
• 626-62-0 Cyclohexyl iodide 

Downstream Products

• 81114-21-8 5-cyclohexylselenopentan-2-one 
• 79094-61-4 N-phenyl-N'-(1-methyl-4-cyclohexylselenobutyl)-p-phenylenediamine 

Relevant academic research and scientific papers

Optically active seleninic acid: Isolation, absolute configuration, stability, and chiral crystallization

Each optical isomer of methaneseleninic acid (1a) was isolated as chiral crystals by recrystallization from methanol/toluene. The absolute configuration of one of the enantiomers was determined by X-ray crystallographic analysis, and the relationship betw

Metal-free synthesis of unsymmetrical selenides from pyridinium salts and diselenides catalysed by visible light

We report the first metal-free selenolations of pyridinium salts with diselenides to prepare unsymmetrical organoselenides catalysed by visible light. This protocol is an efficient and green method for the preparation of unsymmetrical organoselenides because metal-free conditions and readily accessible diselenides are used.

An efficient and practical method for the selective synthesis of sodium diselenide and diorganyl diselenides through selenium reduction

Studies on an efficient and practical method for the selective synthesis of diorganyl diselenides over diorganyl selenides are presented. Considering the discrepancies between reports on organoselenium compounds, we wanted to establish a tolerable synthetic method for diorganyl diselenides and investigate their characteristics. We optimized reaction conditions for sodium diselenide preparation using selenium, NH2NH2·H2O, and NaOH and, by treating the obtained sodium diselenide with various alkyl or aryl halides, achieved the selective synthesis of diorganyl diselenides in modest to good yields (57–88%) with good reproducibility. We further studied the mechanistic implication, the effects of solvent changes, and the stability of diorganyl diselenides.

Sodium Selenosulfate from Sodium Sulfite and Selenium Powder: An Odorless Selenylating Reagent for Alkyl Halides to Produce Dialkyl Diselenide Catalysts

Na 2 SeSO 3, which can be generated in situ by the reaction of Na 2 SO 3 with Se power, was found to be an odorless reagent for the selenenylation of alkyl halides to produce dialkyl diselenides. These products have been recently shown to be good catalysts for the Baeyer-Villiger oxidation of carbonyl compounds, for the selective oxidation of alkenes, or for the oxidative deoximation of oximes. By using aqueous EtOH as the solvent and avoiding the generation of a malodourous selenol intermediate, the selenylation reaction with Na 2 SeSO 3 is much more environmentally friendly than conventional methods. Owing to the cheap and abundant starting materials and selenium reagents, our novel synthetic method reduces the production costs of dialkyl diselenides as organoselenium catalysts, thereby advancing practical applications of organoselenium-catalysis technologies.

Method for synthesizing diselenides

The invention relates to the technical field of chemical synthesis of organic selenium, in particular to a method for synthesizing diselenides. The method comprises the steps that selenium powder and sodium sulfide nonahydrate are utilized for reacting to generate selenium disodium tetrasulphide, and then selenium disodium tetrasulphide and halohydrocarbon react to prepare the diselenides. According to the provided by the invention, raw materials are simple and easy to obtain, cost is low, the path is short, reaction conditions are mild, and the reaction is easy to operate.

Recyclable 1,2-bis[3,5-bis(trifluoromethyl)phenyl]diselane-catalyzed oxidation of cyclohexene with H2O2: A practical access to trans-1,2-cyclohexanediol

1,2-Bis[3,5-bis(trifluoromethyl)phenyl]diselane-catalyzed oxidation of cyclohexene by hydrogen peroxide affords a quick, clean and practical access to the important compound trans-1,2-cyclohexanediol under mild conditions. The highly atom-economic properties, clean procedures, high reaction concentration, short reaction time, mild conditions and eco-friendly, recyclable and low loading catalysts facilitate this methodology for possible future practical industrial production. Copyright

Improved method for the synthesis of organic diselenides from organic halides under atmospheric pressure

An improved approach to the synthesis of organic diselenides is reported. The process involves the reaction of organic halides with selenium, carbon monoxide, and water under atmospheric pressure in the presence of an inorganic base, sodium hydroxide, to afford organic diselenides in good yields. Copyright Taylor & Francis Group, LLC.

Highly efficient route to diselenides from the reactions of imines and selenium in the presence of carbon monoxide and water

Reactions of selenium with imines (RR1C=NR2) of aldehydes and ketones in the presence of carbon monoxide, water and triethylamine lead to reductive selenation, on aerobic work-up, to afford symmetrical diselenides (RR1CHSe)2 in good to excellent yields. The proposed mechanism suggests that both in situ generated carbonyl selenide (SeCO) and hydrogen selenide (H2Se) are involved in the reaction.

Convenient route to dialkyl diselenides from alkyl tosylates. Synthesis of di(cis-myrtanyl) diselenide

A one-step method for the synthesis of dialkyl diselenides, by reaction of alkyl tosylates with sodium diselenide is described. Three variants of the synthesis, using as an example the preparation of optically active di(cis-myrtanyl) diselenide, are compared.