1. The kinetics of the conversion of a series of N-nitroso(nitroalkyl)amines into N-nitro (nitroalkyl)amines under the action of concentrated solutions of HNO3 have been studied and the activation parameters have been determined. 2. The dependences of the rate constants on these reactions on ...
any of a series of compounds with the type formula R2NNO, some of which are carcinogenic, formed in cured meats by the conversion of sodium nitrite. [< German Nitrosamin (1875); seenitroso-,amine] Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright ...
1 H Nuclear magnetic resonance spectra provide evidence for the existence of ON-dialkylnitramines (RH:NO2R′) in geometrically isomeric forms, which do not appear to be readily interconvertible. The spectra of some isomeric dialkyl nitrosohydroxylamines [RN(NO)OR′ and RN(O):NOR′] suggest ...
Optimal results (long-term MTA conversion of 78 ± 6%, DEET selectivity of 86 ± 3% at WHSV = 3–9 h−1, no deactivation over 100 h) were obtained with a supported 12-tungstophosphate at 573 K, 0.1 MPa. This is a preview of subscription content, log in via an institution to ...
ONE POT CONVERSION OF ALCOHOL TO AMINE USING SODIUM AZIDE WITH ZINC AND ZINC CHLORIDE 来自 Semantic Scholar 喜欢 0 阅读量: 43 作者: DD Patil 摘要: A convenient and efficient one pot sequence has been developed for transformation of alcohols to amine using sodium oxide and p-Tolune sulphon...
Furthermore, under the coupling conditions, the reactions of secondary alkyl iodides with various anilines gave the alkyl amine only in low conversion and yields, while the reductive coupling of nitroarenes with secondary alkyl iodides was efficient (Supplementary Fig. 5). Thus, direct alkylation ...
MCPBA has been regarded as the reagent of choice for the conversion ofprimary aliphatic aminesinto the corresponding nitro compounds.5The peroxy acid must be used in excess to minimize formation of dimers of the intermediate nitroso compounds. The yield ofnitroalkaneis also increased if the reactio...
(247) are attributed to an electronic effect, whereas those obtained with (246) can be explained by taking into account the angular strain in the minor isomer. Reaction of 3(5)-nitropyrazole with 1-fluoro-2,4-dinitrobenzene affords exclusively 1-(2,4-dinitrophenyl)-3-nitropyrazole〈70JHC...
An alternative synthesis of the insensitive energetic nitramine 2-nitroimino-5-nitrohexahydro-1,3,5-triazine (1) via nitrolysis of a tertiary amine is presented. Nitration of the tertiary amine precursor (2) is effected by chloride-assisted elimination of the tert-butyl moiety, with the chlorami...
Quantum-chemical study on the tautomerism of primary nitramines: the mechanism of N-nitro-anion protonation excluding aci -form formation The values of the energy barriers to intramolecular 1,3-H shift reactions, in which aci -forms of N- and C-nitro-compounds: \\\(\\\begin{array}{*{20...