56790-57-9

Upstream product

• 36297-89-9 1,2-bis(4-nitrophenyl)diselane 
• 91208-29-6 tribromo-(4-nitro-phenyl)-λ⁴-selane 

Downstream Products

• 877037-09-7 trans-1-bromo-2-(4-nitro-phenylselanyl)-ethylene 
• 17071-12-4 selenophosphoric acid O,O'-diethyl ester-Se-(4-nitro-phenyl ester) 
• 36297-89-9 1,2-bis(4-nitrophenyl)diselane 
• 28285-61-2 1-((Z)-2-Bromo-1,2-diphenyl-vinylselanyl)-4-nitro-benzene 
• 17071-11-3 selenophosphoric acid O,O'-dimethyl ester-Se-(4-nitro-phenyl ester) 

Relevant academic research and scientific papers

A Radical Addition/Cyclization and Se-Group Transfer Strategy for the Facile Synthesis of Se-Containing Cyclopentenes under Metal-Free and Peroxide-Free Conditions

A novel intermolecular radical addition/cyclization and Se-group transfer reaction of terminal alkynes and unsaturated alkyl selenide is presented which offers a straightforward and facile approach for the synthesis of valuable Se-containing cyclopentenes

COMPARATIVE REACTIVITIES OF SELENOSULFATES AND SELENENYLTHIOSULFATES WITH THIOLS

Nitroaryl selenosulfates (1) and selenenylthiosulfates (2) reacted instantaneously with a thiol, N-succinylcysteamine, in water at pH 4.6 to give an insoluble selenenyl sulfide and diselenide.The selenenyl sulfide was the major product from the 2-nitro compounds whereas the diselenide was the major (almost exclusive) product from the 4-nitro compounds.However when the 4-nitro compounds reacted with N-succinylcysteamine in dimethylformamide the selenenyl sulfide was the major and the diselenide the minor product indicating the formation of selenenyl sulfide preceded that of diselenide.Also in the dimethylformamide reactions a short-lived, light-sensitive, purple intermediate was formed which was identified as 4-nitroselenophenol.It was impossible to compare reactivities of selenosulfates and selenenylthiosulfates in water since all reacted immediately to form insoluble products.However, when formation of the purple complex of 4-nitroselenophenol in dimethylformamide was used as an indicator, Se-(4-nitrophenyl) selenenylthiosulfate reacted significantly faster with N-succinylcysteamine than did Se-(4-nitrophenyl) selenosulfate thus correlating with previously observed rates of inactivation of the enzyme papain by these compounds.