双酰基脲化合物的合成研究

研究了双酰基脲化合物的制备方法-芳酰基异氰酸酯与呋喃甲酰胺之间的亲核加成反应，制得5个未见报道的N-取代苯甲酰基-N'-5-取代苯基-2-呋喃甲酰基脲，结构均经^1H NMR、IR、元素分析确证。     

2-(芳氧基苯基硫代膦酰基)-1,2,3σ^2-二氮磷杂环戊二烯的合成

研究了芳氧基苯基硫代膦酰基酮腙与三氯化磷的环化反应, 成功地合成了2-N上带有硫代膦酰基的3-氯1,2,3-二氮磷杂环戊烯(3)及二配位磷化物2-硫代膦酰基1,2,3σ^2-二氮磷杂环戊二烯(4)。     

5-取代苯胺基-6-苯基-1, 2, 4-三嗪-3-硫酮的合成

苯甲酰基-N-取代苯基硫代甲酰胺和氨基硫脲反应, 首先在酸性介质中形成缩氨基硫脲, 然后在碱性介质(pH=8~9)中环化, 生成5-取代苯胺基-6-苯基-1, 2, 4-三嗪-3-硫酮。本文合成10个新的该类杂环化合物。     

4-(硝基苯基)-3-硫代脲酸烷基酯类的合成及其生物活性研究

通过硝基苯胺同烷氧酰基异硫氰酸酯的化合反应以及钛酸丁酯的酯交换反应共合成了9个4-(硝基苯基)-3-硫代脲酸烷基酯类化合物(1-9)。通过各种波谱分析确定了它们的化学结构, 并研究了这类物质对农杆菌的抑制作用。     

2-芳氧基-5-苯基-1,3,4-恶二唑类化合物的合成

通过芳氧基负离子在2-甲磺酰基-5-1,3,4-恶二唑上的亲核取代反应制得2-芳氧基-5-苯基-1,3,4-恶二唑.所有化合物的结构经元素分析,IR, ^1H NMR和MS确证.这些化合物表现出一定的抑制枯草芽孢杆菌繁殖的活性.     

N-(1, 3, 4-噻二唑-2-基)-N′-芳酰基脲的合成及其生物活性

N-(1;3;4-噻二唑-2-基)-N′-芳酰基脲的合成及其生物活性;噻二唑;芳酰基脲;合成;生物活性;植物生长调节剂     

2-(芳氧基苯基硫代膦酰基)-1,2,3σ~2-二氮磷杂环戊二烯的合成

芳香氮磷杂五元环是环状二配位磷化合物中的一类,近年来已有综述报道。1,2,3σ~2-二氮磷杂环戊二烯首先由Ignatova提出。本文研究了芳氧基苯基硫代膦酰基酮腙与三氯化     

N-[5-(4-三氟甲基苯基)-1,3,4-噻二唑-2-基]-N′-芳酰基脲的合成、结构及其生物活性

通过2-氨基-5-(4-三氟甲基苯基)-1,3,4-噻二唑与芳酰基异氰酸酯反应,合成了14种新的芳酰基脲,它们的结构用红外光谱、核磁共振氢谱和元素分析进行了表征,并且采用X射线单晶衍射分析方法测定了化合物2l的结构.初步的生物活性试验表明,部分标题化合物具有优良的植物生长调节活性.     

N-[5-(1-邻氯苯氧乙基)-1,3,4-噻二唑-2-基]N'-芳酰基脲的合成及其生物活性

N-[5-(1-邻氯苯氧乙基)-1;3;4-噻二唑-2-基]N'-芳酰基脲的合成及其生物活性;噻二唑;芳酰基脲;生物活性;生长素;细胞分裂素     

N-5-(1H-1,2,4-三唑基）-N'-芳甲酰基脲的合成与生物活性

以5-氨基-1H-1，2，4-三唑-3-羧酸与酰基异氰酸酯反应，合成了15个新的N- 5-（1H-1，2，4-三唑基）-N'-芳甲酰基脲，用核磁共振氢谱、红外光谱和元素分 析确证了其结构，并进行了室内生物活性测试。生测试验证明部分酰基脲类化合物 具有良好的植物生长调节活性，其中N-5（3-羧基-1，2，4-三唑基）-N'-o-氯苯甲 酰基脲、N-5-（3-羧基-1，2，4-三唑基）-N'-o-溴苯甲酰基脲和N-5-(3-羧基-1， 2，4-三唑基）-N'-p(或m)-甲基苯甲酰基脲具有优良的生长素活性。     

Studies on Azolylacetonitriles: The Reactivity of Thiazole-2-yl,Thiadiazol-2-yl Acetonitriles Toward Electrophilic Reagents

5-Acetyl-2-cyanomethyl-4-methylthiazole, 2-aminothiazole, and 5-N-benzoylamino-1,3,4-thiadiazole-2-yl-acetonitrile react with acetone, and malononitrile derivatives in the presence of sulfur to yield the corresponding thiophene derivatives. Also, 4-furylmethylene-2-phenyl-2-oxazolin-5-ones react with thiophenol, and/or thionaphthol to give the thiolester derivatives in one-pot synthesis. The structures of the products were based on IR, 1 H NMR, and elemental analysis.     

Photochemical synthesis of a 4,5-dihydrofuroazetidinone, a novel β-lactam system

2,4-Dimethyl-3-phenylisoxazole anhydrobases were easily prepared from the corresponding 5-chloroisoxazolium trifluoromethanesulfonate and carbon anions of 1,3-dioxo compounds in the presence of triethylamine. Photorearrangement of 2-(2,4-dimethyl-3-phenyl-2H-isoxazol-5-ylidene)malonic acid diethyl ester gave a 4,5-dihydrofuroazetidinone in good yield.     

2-芳基-5-(5-苯基-2H-四唑-2-亚甲基)-1,3,4-噁二唑类化合物的研究

作者曾研究2-芳基-5-(2-苯基-4-喹啉基)-1,3,4-噁二唑类衍生物,并发现它们具有促进小麦发芽生长的功效。Juby和Shan等报道某些四唑类化合物具有消炎性     

Convenient Methods for Synthesis of Partially Hydrogenated Benzothiazol-2-ylpyridines

By condensation of 2-chlorobenzaldehyde, cyanothioacetamide, and 2-phenacylbenzothiazole in the presence of piperidine, we have synthesized piperidinium 5-(benzothiazol-2-yl)-4-(2-chlorophenyl)-3-cyano-6-hydroxy-6-phenyl-1,4,5,6-tetrahydropyridine-2-thiolate, based on which the corresponding partially hydrogenated 2-alkylthiopyridines have been obtained.     

2-吡唑啉9-芳基邻菲咯啉镍配合物的合成及催化乙烯齐聚的研究

利用1-苯基-3-(2,4,6-三甲基苯基)丙烯酮和2-肼-9-芳基邻菲咯啉的缩合反应合成了一系列2-[N-(3-笨基-5(2,4,6-三甲基笨基)吡唑啉)]-9-芳基邻菲咯啉类配体(L_1-L_4),分别与NiCl_2反应得到了相应的配合物[NiCl_2](1-4), 对配体和配合物进行了表征, 并用X-单晶衍射分析了配合物4的晶体结构, 表明Ni中心为五配位的四方锥构型. 化合物l-4在MAO存在下对乙烯齐聚表现出良好的催化活性. 在1 Mpa 乙烯压力下, 化合物4的催化活性最好, 高达2.52×10~5g mol~(-1) h~(-1). 讨论了配体空间位阻及反应条件对乙烯齐聚活性的影响, 发现邻菲咯啉的9-位位阻对催化活性影响更明显.     

5-phenyl-2H-tetrazol-2-ylmethyl ketones in the synthesis of tetrazolylalkanols and tetrazolyl(hydroxy)alkylphosphonates

The reduction of 1-(5-phenyl-2H-tetrazol-2-yl)propan-2-one and 1-phenyl-2-(5-phenyl-2H-tetrazol-2-yl)ethanone with sodium tetrahydridoborate gave 1-(5-phenyl-2H-tetrazol-2-yl)propan-1-ol and 1-phenyl-2-(5-phenyl-2H-tetrazol-2-yl)ethanol, respectively. Only 1-(5-phenyl-2H-tetrazol-2-yl)propan-2-one was reduced with baker’s yeast with an appreciable yield. 1-(5-Phenyl-2H-tetrazol-2-yl)propan-2-one and 1-phenyl-2-(5-phenyl-2H-tetrazol-2-yl)ethanone reacted with diethyl phosphonate in the presence of potassium fluoride to produce the corresponding diethyl [hydroxy(5-phenyl-2H-tetrazol-2-yl)alkyl]phosphonates.     

Alternative products in one-pot reaction of benzylidenemalononitrile,N-methyl-2-thiocarbamoylacetamide,and ω-bromoacetophenone

N-Methyl-2-benzoylmethylsulfanyl-4-phenylnicotinamide and N-methyl-2-(4-phenyl-1,3-thiazol-2-yl)-acetamide have been obtained as alternative products to the desired N-methyl-2,3-dihydro-7H-thiazolo[3,2-a]pyridine-8-carboxamide by a one-pot cyclocondensation of benzylidenemalononitrile, N-methyl-2-thiocarbamoylacetamide, piperidine, and ω-bromoacetophenone. 2-Amino-1-methyl-6-oxo-4-phenyl-5-(4-phenyl-1,3-thiazol-2-yl)-1,6-dihydropyridine-3-carbonitrile has been obtained as main product by treatment of benzylidenemalononitrile with N-methyl-2-(1,3-thiazol-2-yl)acetamide. Dedicated to Professor I. Kalvinsh on his 60th birthday __________ Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 777–781, May, 2007.     

4(3H)-Quinazolinones containing heterocyclic group in position 3

The corresponding 2,3-substituted 4(3H)-quinazolinones were obtained in the reactions of 2-methyl- and 2-phenyl-4-oxo-3,1-benzoxazines with 1-amino-1,2,4-triazole, 4-amino-2,3-dimethyl-1-phenyl-5-pyrazolone, 2-amino-5-ethyl-1,3,4-thiadiazole, 3-amino-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydroindazole, 1-amino-3-cyano-4,6-dimethyl-2-pyridone, and 1-amino-3-cyano-6-phenyl-4-trifluoromethyl-2-pyridone. The formation of N-benzolyanthranilamides in the reactions of 2-phenyl-4-oxo-3,1-benzoxazine with 2-amino-5-ethyl-1,3,4-thiadiazole and 1-amino-3-cyano-6-phenyl-4-trifluoromethyl-2-pyridones was exceptional. The structures of two of the products have been confirmed by X-ray crystallography.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 936–943, July, 2000.     

Nitration products of substituted 1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-ones

Highly substituted, novel, 1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-ones were obtained by direct nitration of the corresponding mono- or di-substituted 5-phenyl-1,4-benzodiazepines. Substituent effects and the orientation of aromatic substituents in the nitration products are discussed. The single-crystal X-ray structural data for one of these products, 18 , is given.     

The chemical behavior of 2-methylene-2,3-dihydro-3-furanones

Diphenylketene undergoes regioselective thermal [2+2]-cycloaddition to the heterocyclic C(3)=O carbonyl group of 5-aryl-2-methoxycarbonylmethylene-2,3-dihydrofuran-3-ones and 5-phenyl-2,3-dihydrofuran-2,3-dione to give the corresponding 3-diphenylmethylene derivatives of 2,3-dihydrofuran.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 331–334, February, 1995.