共查询到20条相似文献,搜索用时 15 毫秒
1.
Starting from the readily available 4-bromomethy-5-carbethoxy 1,2,3-thiadiazole (V), 5-bromomethy-4-carbethoxy-1,2,3-thiadiazole (IX) and ethyl 2-aryl-5-bromomethyloxazole-4-carboxylate (XIV), 4,10-dihydro-10-oxo[1]benzoxepino[3,4-d][1,2,3]thiadiazole (Ia), 4,10-dihydro-10-oxo[1]benzothiepino[3,4-d][1,2,3]thiadiazole (Ib), 4,10-dihydro-4-oxo[1]benzothiepino[4,3-d] [1,2,3]thiazole (II), 2-aryl-4,10-dihydro-4-oxo[1]benzoxepino[4,3-d]oxazoles (XIXa-XIXc) and 2-aryl-4,10-dihydro-4-oxo[1]benzothiepino[4,3-d]oxazoles (XIXd-XIXf) were prepared. 相似文献
2.
Starting from readily available methyl 2-substituted4-methyl-5-thiazolyl ketone and methyl 4-methyl-2-phenyl-5-selenazolyl ketone, thieno[3, 4-d]thiazole, thieno[3, 4-d]selenazole, selenolo[3, 4-d]thiazole and selenolo[3, 4-d]selenazole were prepared. The structures of all compounds were confirmed by analytical and spectroscopic methods. 相似文献
3.
A. Shafiee M. A. Ebrahimzadeh J. Shahbazi S. Hamedpanah 《Journal of heterocyclic chemistry》1998,35(1):71-75
Starting from the readily available aryl 2-methyl-5-phenyl-3-furyl ketones, 5-methyl-1H-1-phenylpyrazole-4-yl ketones and 4-methyl-2-phenyl-5-thiazolylcarboxaldehyde, a series of 2-phenyl-4-arylthieno[3,4-b]-furan, 2-phenyl-4-(p-methoxyphenyl)selenolo[3,4-b]furan, 4-aryl-1H-1-phenylthieno[3,4-c]pyrazole and 5-benzyl-2-phenylpyrrolo[3,4-d]thiazole were prepared in high yield. 相似文献
4.
Starting from the readily available 2-substituted-4-formylselenazoles and 2-substituted-4-formylthiazoles, a series of substituted-pyrrolo[3,2-d]selenazoles and substituted-pyrrolo[3,2-d|-thiazoles were prepared respectively. 相似文献
5.
Starting from the readily available aryl 3-methyl-2-benzo[b] furyl ketones a series of 3-sub-stituted thieno[3,4-b] benzofurans and 3-substituted selenolo[3,4-b] benzofurans were prepared in high yield. The parent compound, thieno[3,4-b] benzofuran was prepared through the reaction of thioacetamide with 2-chloromethyl-3-formylbenzo[b] furan in moderate yield. 相似文献
6.
Starting from the readily available 2-methyl-3-benzoylfuran, 1-phenylthieno[3,4-b]furan and 1-phenyl-seleno[3,4-b]furan were prepared. Also, starting from phenyl 3-methylindol-2-yl ketone and aryl 2-methyl-indole-3-yl ketones a series of substituted thieno[3,4-b]indoles and substituted seleno[3,4-b]indoles were prepared. 相似文献
7.
Starting from the readily available aryl 2-substituted-4-methyl-5-thiazolyl ketones, a series of 2,6-disubstituted-thieno[3,4-d]thiazoles and 2,6-disubstituted-selenolo[3,4-d]thiazoles were prepared. The structures of these compounds were confirmed by analytical, spectroscopic methods and through the reaction with dimethyl acetylenedicarboxylate. 相似文献
8.
Starting from the readily available ethyl 2-phenyl-4-methyl-thiazole-5-carboxylate (III), 2-phenyl-4-chloromethyl-thiazole (VIII) and 2-aryl-4-chloromethylselenazole (XIV), 2-phenyl-4,10-dihydro-10-oxo-[1]benzoxepino[3,4-d]thiazole (Ia), 2-phenyl-4,10-dihydro-10-oxo[1]benzothiepino[3,4-d]thiazole (Ib), 2-aryl-4,10-dihydro-10-oxo[1]benzoxepino[3,4-d]selenazoles (IIa-IIe) and 2-aryl-4,10-dihydro-10-oxo[1]benzothiepino[3,4-d]selenazoles (IIf-IIj) were prepared. 相似文献
9.
10.
Anna Maria Almerico Gaetano Dattolo Girolamo Cirrincione Giuseppe Presti Enrico Aiello 《Journal of heterocyclic chemistry》1987,24(5):1309-1311
The title compounds were prepared by nitration of compounds 2 , reduction of the dinitro derivatives 4 and diazotization of the diamino derivatives 6 followed by an intramolecular coupling reaction. Compound 4a showed good activity against Salmonella cholerasuis and Clostridium perfringens bacteria. 相似文献
11.
The selenium dioxide oxidation of a series of 1,2,3,4-tetrahydrophenanthrone and 1,2,3,4-tetrahydrophenanthren-4-one semicarbazones afforded 4,5-dihydrophenanthro[4,3-d]-1,2,3-selenadiazoles and 10,11-dihydrophenanthro[1,2-d]-1,2,3-selenadiazoles. The latter series which represent a new type of selenaazasteroidal compounds were pyrolyzed and gave the corresponding 1,4-deselenine derivatives. 相似文献
12.
Starting from [4,3-c] and [3,2-c] methyl chlorosulfonylthiophenecarboxylates the synthesis of ketones 7 and 8 is described. These compounds are the first two representatives of the new thieno[3,4-c] and thieno-[3,2-c][2,1]benzothiazepine ring systems. The formation of methyl 3-chlorosulfonylthiophene-2-carboxy-late is also revised. 相似文献
13.
The cyclization of 4-amino-5-aryl-3-cyanomethylthio-1,2,4-triazoles II in the presence of concentrated sulfuric acid yields 7H-6-amino-s-triazolo[3,4-b][1,3,4]thiadiazines III . Cyclization of 4-amino-5-aryl-1,2,4-tria-zole-3-thiones I with phenacyl chloride yields 7H-3-aryl-6-phenyl-s-triazolo[3,4-b][1,3,4]thiadiazines IV . Similarly, compounds I condensed with cyanogen bromide, phenyl isothiocyanate and carbon disulfide to give the corresponding cyclized products 6-amino-3-aryl-s-triazolo[3,4-b][1,3,4]thiadiazoles V , 3-aryl-6-phenyl-amino-s-triazolo[3,4-b][1,3,4]thiadiazoles VI and 3-aryl-striazolo[3,4-b][1,3,4]thiadiazol-6(5H)thiones VII , respectively. Also in the presence of phosphoryl chloride, compounds I underwent cyclization with monocarbo-xylic acids and oxalic acid to 3,6-diaryl-s-triazolo[3,4-b][1,3,4]thiadiazole VIII and 6,6′-bis(3-aryl-s-triazolo-[3,4-b][1,3,4]thiadiazoles) IX . The above compounds were screened for their antimicrobial activity. 相似文献
14.
A novel series of 2-arylthiocarbamoylhydrazino-5-phenyl-1,3,4-thiadiazoles III-VII was synthesized and cyclodesulfurized into the corresponding 3-arylamino-6-phenyl-s-triazolo[3,4-b][1,3,4]thiadiazoles VIII-XII with DCCD. Some of the products were found to be only moderately active against Staphylococcus aureus and Candida albicans. 相似文献
15.
Several new pyrazolo[3,4-d]pyrimidine, pyrazolo[3,4-e][1,4]diazepine, pyrazolo[3,4-d][1,2,3]triazine and pyrolo[4,3-e][1,2,4]triazolo[1,5-c]pyrimidine derivatives were prepared by the reaction of the corresponding 5-amino-pyrazole-4-carbonitrile derivative with different organic reagents under different reaction conditions. Using IR, 1H NMR, and mass spectra we have characterized all new compounds. 相似文献
16.
The use of tributyltin cyanide, trimethylsilyl cyanide and potassium cyanide in the Reissert reaction is contrasted in the furo[3,2-c]pyridine, thieno[3,2-c]pyridine, thieno[2,3-dpyridazine, and thieno[2,3-d]pyrimidine ring systems. 相似文献
17.
18.
Structural Chemistry - In this study, we design a series of bridged energetic compounds based on pyrazolo[3,4-d][1,2,3]triazole to screen potential energetic materials with excellent detonation... 相似文献
19.
The synthesis of the novel benzo[c]pyrrolo[1,2,3-ef][1,5]benzodiazepine ring system is described. This was achieved by cyclization of an appropriately substituted (7-aminoindolin-1-yl)benzamide or benzoic acid. The resulting tetracyclic lactams were reacted with N-methylpiperazine in the presence of titanium tetrachloride to provide derivatives which were tested for potential antipsychotic activity. 相似文献