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1.
A pure sample of nitrosyl chloride has been prepared either by reaction of phosphorus trichloride with concentrated nitric acid or by reaction of phosphorus trichloride with sodium nitrate in presence of water. The nitrosyl chloride gas has been characterized by i.r. spectral data and elemental analysis. 相似文献
2.
O. B. Bondarenko A. Yu. Gavrilova M. A. Kazantseva V. N. Tikhanushkina E. E. Nifant’ev L. G. Saginova N. V. Zyk 《Russian Journal of Organic Chemistry》2006,42(2):249-255
A reaction of monoarylcyclopropanes with nitrosyl chloride activated by sulfur (IV) oxide gave in good yields 5-arylisoxazolines. The reaction is of electrophilic character. A scheme of the reaction was suggested. 相似文献
3.
Bondarenko O. B. Gavrilova A. Yu. Saginova L. G. Zyk N. V. 《Russian Journal of Organic Chemistry》2003,39(7):1021-1024
Arylcyclopropanes readily react with nitrosyl chloride in liquid sulfur dioxide to give the corresponding 5-aryl-4,5-dihydroisoxazoles in good yield. The reaction is most selective at -40 to -50°C; at higher temperature, the contribution of side processes becomes appreciable. The complete conversion of arylcyclopropanes containing donor substituents is attained with the use of 1.5 equiv of nitrosyl chloride, while the rate of the transformation of compounds with nonactivated aromatic rings considerably increases on raising the molar ratio NOCl-arylcyclopropane. 相似文献
4.
The Reaction of Antimony (V) Choride with Sodium Nitrite and Sodium Carbonate, respectively. By reaction of sodium nitrite resp. sodium carbonate with antimony (V) chloride, sodium hexachloroantimonate(V) and antimony dioxidechloride were obtained besides nitrosyl chloride resp. carbon dioxide. The reaction mechanism is discussed in view to intermediates which cannot be isolated. 相似文献
5.
Miguel F. Braa Jos M. Castellano Maria J. R. Yunta 《Journal of heterocyclic chemistry》1983,20(5):1403-1405
The title oxadiazoles were formed in the reaction of N-(4-pyridylmethyl)arylamides with nitrosyl chloride in low yields. 相似文献
6.
The nitrosyl isocyanate (ONNCO) has been generated from a heterogeneous reaction of gaseous nitrosyl chloride with silver isocyanate and studied for the first time in the gas phase. This structurally and energetically novel transient specimen is characterized by HeI photoelectron spectroscopy combined with DFT calculations. Both the calculations and the spectroscopic results suggest that the molecule adopts an open-chain trans structure. The observed decomposition products indicate the formation of ONNCO and further confirm the previously reported decomposition pathway. 相似文献
7.
O. B. Bondarenko A. Yu. Gavrilova L. G. Saginova N. V. Zyk N. S. Zefirov 《Russian Journal of Organic Chemistry》2009,45(2):218-225
The reaction of phenylcyclopropanes substituted in the three-membered ring with nitrosyl chloride activated with sulfur(IV, VI) oxides provided in good yield substituted 5-phenylisoxazolines as a mixture of structural isomers. 相似文献
8.
K. Troev E. Tashev G. Borisov 《Phosphorus, sulfur, and silicon and the related elements》2013,188(3):313-318
Abstract The transesterification process of dimethyl and diethyl phosphite with 1,3-dichloropropanol-2 is examined. It is found that the reaction proceeds in the absence of catalyst at a temperature of 155°, whereas in the presence of morpholine as a catalyst it takes place at 126°C. The transesterification of dimethyl phosphite and diethyl phosphite with 1,3-dichloropropanol-2 is accompanied by the evolution of dimethyl and diethyl ethers and alkyl halides (methyl chloride and ethyl chloride). 相似文献
9.
Maier G Reisenauer HP De Marco M 《Chemistry (Weinheim an der Bergstrasse, Germany)》2000,6(5):800-808
Irradiation of nitrosyl bromide BrNO (4) with light of the wavelength lambda = 248 nm and nitrosyl chloride CINO (6) with lambda = 193 nm in an argon matrix at 10 K leads to the corresponding isomers isonitrosyl bromide BrON (5) and isonitrosyl chloride CION (7). Both new compounds 5 and 7 have been identified by comparison of the experimental and calculated (BLYP/6-311 + G*) IR spectra. Nitrosyl fluoride FNO (8) could not be transferred into isonitrosyl fluoride FON (9). The back reactions 5-->4 and 7-->6 can be initiated by UV (lambda > 310 nm), visible or IR light. The retransformation also occurs spontaneously in the matrix at 10 K under exclusion of any UV/Vis or IR radiation. Surprisingly, the reaction rates of these spontaneous back reactions are temperature independent between 8.5 and 25 K. The mechanism of these processes is discussed. 相似文献
10.
Phosphorylation of phenols with diethyl cyanophosphonate in methylene chloride solution at 0°C is an easy, rapid and good yielding reaction. 相似文献
11.
da Silva G Kennedy EM Dlugogorski BZ 《Journal of the American Chemical Society》2005,127(11):3664-3665
The rate of primary amino acid nitrosation, both with and without the addition of nucleophilic species, has been studied using stopped-flow spectrophotometry. The rate of nitrosation in the presence of strong nucleophilic species such as thiocyanate and thiourea was shown to be much faster than nitrosation without the addition of a nucleophile. Rate constants were determined at 25 degrees C for reaction of the amino acids alanine, glycine, and valine with five common nitrosating agents. For the nitrosating agents nitrosyl chloride, nitrosyl bromide, and dinitrogen trioxide the rate of reaction was observed to approach the predicted encounter-controlled limit. However, for nitrosyl thiocyanate and S-nitrosothiourea nitrosation was found to be reaction-controlled. In the reaction-controlled regime, rate constants were found to increase with increasing electrophilic strength of the nitrosating agent, as measured by the parameter En, with a slope indicative of a product-like transition state. Activation energies were also measured, being around 10-30 kJ mol-1 for encounter-controlled rate constants, and 30-50 kJ mol-1 for reaction-controlled rate constants. Our results are discussed in the context of in vivo amino acid nitrosation, where it is proposed that the rate of nitrosation may be considerably greater than currently thought, due to the presence of nucleophilic species. 相似文献
12.
The action of chlorine on oximes in hydrogen fluoride as a medium gives gem-dihalogenoalkanes. The reaction proceeds through the intermediate formation of gem-chloronitrosoalkanes. The relative proportions between gem-dichloro, -difluoro and -fluorochloro compounds are dependent on the presence of a cosolvent. The use of other oxidants, such as nitric oxide, dinitrogen tetroxide or nitrosyl chloride, gives similar compounds. 相似文献
13.
(1-萘甲基)四氢糠基丙二酸二乙酯的新法合成 总被引:2,自引:1,他引:1
(1-萘甲基)四氢糠基丙二酸二乙酯(Ⅴ)是合成萘呋胺酯草酸盐的重要前体,而萘呋胺酯草酸盐作为一种新型周围血管扩张剂,正受到越来越多的重视[1,2].(1-萘甲基)四氢糠基丙二酸二乙酯(Ⅴ)的原有合成方法[3]产率低,且反应时间长.本文改进了(Ⅴ)的原... 相似文献
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16.
V. V. Golovko A. I. Statsenskaya Yu. A. Baskakov Yu. G. Putsykin 《Chemistry of Heterocyclic Compounds》1986,22(10):1084-1087
Interaction of nitrosyl chloride with 1-arylimidazolin-2-ones in methanol leads to the formation of 4,5-dimethyoxyimidazolidin-2-ones. Under similar conditions 1,5-diarylimidazolin-2-ones give 1,5-diaryl-4-oximino-5-alkoxyimidazolidin-2-ones. When the reaction is carried out in an aprotic solvent 1,5-diaryl-4-nitrosoimidazolin-2-ones are separated, and when treated with alcohol they give the final reaction products. An increase in temperature and duration of the reaction results in the formation of 1,5-diaryl-5-hydroxyhydantoins.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1339–1342, October, 1986. 相似文献
17.
Summary The reaction of cyclic enaminonitriles1 with diethyl acetonedicarboxylate (2) affords fused 4-amino-3-ethoxycarbonyl-2-ethoxycarbonylmethyl-pyridines4. The course of the reaction and the yield of cyclic products were promoted by tin(IV)chloride. N-substituted diethyl 3-aminoglutaconates3 seem to be intermediates of the cyclization reaction.Dedicated to Prof.Milan Kratochvil on the occasion of his 70th birthday 相似文献
18.
脂肪族二酸二烷基双去氢枞基双噁二唑的合成及除草活性 总被引:1,自引:0,他引:1
以去氢枞酸为原料,制备去氢枞酸酰氯.以脂肪族二酸为原料,经过脂肪族二酸二乙酯得到脂肪族二酸二酰肼.脂肪族二酸二酰肼与去氧枞酸酰氯在相转移催化下反应得到N,N'-二去氢枞酰基取代脂肪族二酸二酰肼,再脱水环合,得到5个标题化合物脂肪族二酸二烷基双去氢枞基双噁二唑.通过元素分析,IR,MS,1H NMR和13C NMR对所合成的新化合物进行了结构表征.初步的除草活性测试表明,化合物6b~6e在100 μg/mL浓度下对油菜的胚根生长具有良好的抑制作用,抑制率均超过80%. 相似文献
19.
许多天然存在和人工合成的氨基磷酸因具有抗菌、除草、植物生长调节等多方面的生物活性,从而使这一领域的研究十分活跃[’]。而2一咪哩琳酮和2,3一派嗓M酮也是具有除草、杀菌等多种生物活性的化合物I’],因此我们设计将a一氨基磷酸引入到2一眯吃财酮及2,3服喀二酮的结构中,设计并合成了Ill、W两类新化合物,以期找到高生物活性的化合物。1实验部分BrukerAC.P200型核磁共振仪,TMS为内标,溶剂CDC13;VGZAB-HS型质谱仪;Yanaco.CHNCORDERMT-3型元素自动分析仪;硅胶… 相似文献
20.
Zhizhin K. Yu. Votinova N. A. Goeva L. V. Kuznetsov N. T. 《Russian Journal of Coordination Chemistry》2001,27(9):625-627
Nitrosation of dodecahydro-closo-dodecaborate anions with nitrous acid in an aqueous solution and with isoamyl nitrite and nitrosyl chloride in nonaqueous solutions was studied. The main reaction product is the mononitrosoundecahydro-closo-dodecaborate anion. Conditions were selected for the preparation of the nitroso-substituted anion in the highest yield as alkylammonium, tetraphenylphosphonium, and alkali-metal salts. The salts were studied using IR, UV, and 11B NMR spectroscopy. 相似文献