Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Derek J. Greig"'
Publikováno v:
ARKIVOC, Vol 2002, Iss 3, Pp 121-129 (2002)
Externí odkaz:
https://doaj.org/article/4d29ffe820e74dc2abf07e4541b20842
Publikováno v:
Phosphorous and Sulfur and the Related Elements. 26:151-154
Nitrile sulphides, generated by thermal decarboxylation of 1,3,4-oxathiazol-2-ones, undergo 1,3-dipolar cycloaddition to trichloroacetonitrile yielding 5-trichloromethyl-1,2,4-thiadiazoles (45-66%). The reaction of the cycloadducts with secondary ami
Publikováno v:
ChemInform. 18
Publikováno v:
ChemInform. 18
Publikováno v:
Tetrahedron Letters. 23:5453-5454
Thermal expulsion of carbon oxusulphide from 1,3,4-dithiazol-2-ones in the presence of DMAD affords nitrile sulphide-derived dimethyl isothiazole-4,5-dicarboxylates.
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :607
The carbon–nitrogen triple bond of aryl thiocyanates acts as a dipolarophile in 1,3-dipolar cycloadditions. Reaction with nitrile oxides, nitrile sulphides, and benzonitrile N-phenylimide yields, respectively, 5-arylthio-1,2,4-oxadiazoles, -thiadia
Publikováno v:
Journal of the Chemical Society, Chemical Communications. :696
3-Aryl-5-methylthio-1,4,2-dithiazolium salts, prepared by treatment of the corresponding 1,4,2-dithiazole-5-thiones with dimethyl sulphate, react with aniline and with active methylene compounds to form, respectively, 5-phenylimino- and 5-alkylidene-
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :590
The hydrolysis of 3,1-benzoxazin-4-ones is catalysed by buffer acids and by intramolecular carboxylic acid groups suitably placed on the heterocyclic nucleus. Small or inverse deuterium oxide solvent isotope effects on the acid catalytic terms are co
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1205
1,4,2-Dithiazole-5-thiones can act either as the 2-atom or the 3-atom component in 2 + 3-cycloadditions. Benzonitrile N-phenylimine, generated in situ by dehydrochlorination of N-phenylbenzohydrazonoyl chloride, reacts at the exocyclic CS double bond