10437-24-8

Upstream product

• 79-37-8 oxalyl dichloride 
• 80-97-7 Cholestanol 
• 95782-88-0 3β-phenylcarbamoyloxy-5α-cholestane 
• 121569-78-6 Methyl-phenyl-carbamic acid (3S,5S,8R,9S,10S,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester 
• 110-83-8 cyclohexene 
• 121569-79-7 Phenyl-thiocarbamic acid O-[(3S,5S,8R,9S,10S,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl] ester 
• 92216-61-0 N-(5α-cholestan-3β-yloxythiocarbonyl)-N,N-dimethylamine 
• 84551-47-3 N-methyl N-phenyl carbamate de cholestanyle-3β 

Downstream Products

• 64-18-6 formic acid 
• 481-21-0 cholestane 
• 80-97-7 Cholestanol 

Relevant academic research and scientific papers

Reduction et photoreduction de derives de l'acide carbonique influence de l'hexamethylphosphorotriamide

Photoreduction and reduction of carbonic acid derivatives in HMPT have been compared.The highest yield of alkane was obtained from N,N-dimethylthiocarbamates either by the photochemical method or by reduction with a dissolved metal.Competitive reactions have been characterized: - during the photoreduction not only the alkane but products of a photo-Fries rearrangement and products of a homolytic cleavage were detected; - basic reactions can compete with the reduction of carbonic acid derivatives by sodium in HMPT.

The Invention of New Radical Chain Reactions. Part 11. A New Method for the Generation of Tertiary Radicals from Tertiary Alcohols

A convenient procedure for the radical deoxygenation of tertiary alcohols has been invented using the double half esters of oxalic acid with the t-alcohol and N-hydroxypyridine-2-thione.Decomposition of this type of ester in the presence of 1,1-dimethylethane- or (better) 1,1-diethylpropane-thiol gave the corresponding hydrocarbons in good yield.It has been shown that the oxalate fragmentation is not concerted, but involves a stepwise loss of carbon dioxide.Tertiary alcohols are also a convenient source of radicals for addition to siutable alkenes with formation of quaternary centres.

PHOTOREACTIVITE DE DERIVES DE L'ACIDE CARBONIQUE EN MILIEU REDUCTEUR

Photoreduction of carbamates, thiocarbamates and carbonate occurs in a mixture of HMPT-H2O.A better yield of alkane is observed for thiocarbamates.Formates and photoFries products are also isolated from the reaction mixture.Radical intermediates can be trapped by cyclohexene even in HMPA.