Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Orthoformic acid"'
Publikováno v:
Chemistry of Heterocyclic Compounds. 46:1520-1526
Cyclization of the hydrazide of 5-ethoxycarbonyl-2,6-dimethylpyridine-3-carboxylic acid by acylation with aromatic or aliphatic acid chlorides with subsequent boiling in POCl3 or heating in orthoformic acid gave the corresponding ethyl 2,6-dimethyl-5
Autor:
J. Strating, J. Reitsema
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 85:421-425
An interesting group of compounds with the general formula R′SO2CH(Cl)SR, is formed by reaction of α-diazosulfones (R′SO2CHN2) with sulfenyl chlorides (RSCl). Representatives with different kinds of R and R′ groups are described.
Publikováno v:
Journal für praktische Chemie. 342:682-699
Orthoamides. LIV. Contributions to the Chemistry of Azavinylogous Orthoformic Acid Amide Derivatives The azavinylogous aminalester 3 reacts with primary amines to give amidines 5 and 6. In the reaction of 3 with aniline the azavinylogous amidine 7 is
Publikováno v:
Journal für praktische Chemie. 342:256-268
The formamidinium salts 11a, c as well as the nitrile 12 react with sodiumhydride/dimethylamine in the presence of trimethylborate to give the ortho formic acid amide 3a. The orthoamides 6a and 16 can be prepared from the iminium salts 15 and 14, res
Publikováno v:
Journal für praktische Chemie. 342:240-244
The push-pull functionalization of the ulose 1 to give the (E)-configurated dimethylaminomethylene pyranosidulose 2 was achieved with bis(dimethylamino)tert-butoxymethane. Substitution of the dimethylamino group by different amines provided the corre
Autor:
R. A. Kuroyan, S. G. Zigil'yan, A. B. Asryan, M. O. Oganisyan, A. I. Markosyan, I. A. Dzhagatspanyan
Publikováno v:
Pharmaceutical Chemistry Journal. 30:498-502
Atypical anxiolytics (derivatives of triazolodiazepine and -quinazoline) recently came into use in medical practice, extending the class of tranquilizers. However, these drugs, like all benzodiazepine tranquilizers, exhibit certain side effects such
Publikováno v:
Journal f�r Praktische Chemie/Chemiker-Zeitung. 338:403-413
Orthoamides. IL. Reactions of Orthoamide Derivatives with Sulfur and Selenium, Syntheses of 1,3-Thiazole- und 1,3-Selenazole Derivatives N,N-Dimethylformamide acetal reacts with elemental selenium to give a mixture of selenocarbonic acid derivatives
Publikováno v:
ChemInform. 42
Cyclization of the hydrazide of 5-ethoxycarbonyl-2,6-dimethylpyridine-3-carboxylic acid by acylation with aromatic or aliphatic acid chlorides with subsequent boiling in POCl3 or heating in orthoformic acid gave the corresponding ethyl 2,6-dimethyl-5
Publikováno v:
Zeitschrift für Naturforschung B. 56:105-107
The preparation of tris(diformylamino)methane (3), a hitherto unknown derivative of orthoformic acid, is described. In the presence of a Lewis acid the orthoamide 3 formylates activated aromatic compounds.
Publikováno v:
ChemInform. 22