55181-05-0Relevant articles and documents
ORGANIC SYNTHESIS USING ORGANOSULFUR-NITRITES AND -NITRATES
Kim, Yong Hae
, p. 249 - 260 (2007/10/02)
Thionitrites or thionitrates have been considered to be unstable.However, bulky groups' thio-NOn such as t-butylthio-nitrites and -nitrates have been readily synthesized and found to be stable enough for the use of the useful organic syntheses as an excellent nitrosation and diazotization reagents under mild conditions.Direct conversion of amines to the corresponding halides in the presence of copper halides (II), fluorination of heterocyclic amines in the presence of sodium tetrafluoroborate, α- oximation of methylene groups in ketones, facile cleavage of C=N bond to ketones, and desulfurization of thioacetals and thioketals, and other useful organic syntheses are described.
Some Properties of Cyclopropenone Oximes under Beckmann Reaction Conditions
Yoshida, Hiroshi,Yoshida, Keisuke,Totani, Hiroyuki,Ogata, Tsuyoshi,Matsumoto, Kiyoshi
, p. 3579 - 3582 (2007/10/02)
The reaction of diphenylcyclopropenone oxime (1a) with acetyl or tosyl isocyanate, carboxylic anhydrides, or nitrohalobenzenes yielded the cyclopropenone O-substituted oxime derivatives.Treating with thionyl bromide and chloride 1a gave 3-haloacrylonitriles.Whereas 1a as well as other cyclopropenone oximes, were stable under acidic conditions, heating in methanolic sodium hydroxide gave the ring-opened α,α-dimethoxyketones oximes.
FACILE DIRECT α-OXIMATION OF KETONES USING t-BUTYL THIONITRATE
Kim, Yong Hae,Park, Young Jun,Kim, Kweon
, p. 2833 - 2836 (2007/10/02)
Various ketones containing methylene groups at α-position were found to react with t-butyl thionitrate at 0 deg C in tetrahydrofuran to give the corresponding α-oximino-ketones in excellent yield.
