摘要：
Novel sulfonylurea derivatives containing five-membered heterocycle 3a - l and 4a - d were synthesized in good yields by the regioselective addition of aryl sulfonylisocyanates 1 to 5-amino-3-benzyl (aryl) thio-1, 2, 4-triazoles and its pyrazole analogues 2. The structures of all these compounds were evaluated by elemental analyses and 1H NMR spectroscopy. The preliminary biological tests showed that the products displayed herbicidal activity against rape to some extent.
作者机构：
[陆荣键; 杨华铮; 费学宁; 杨光富] Institute of Pesticide Chemistry, Central China Normal University, Wuhan, Hubei 430079, China;Institute of Elemento‐Organic Chemistry, National Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071, China
通讯机构：
[Yang, G.-F.] I;Institute of Pesticide Chemistry, , Wuhan, Hubei 430079, China
摘要：
Abstract In search of novel herbicides with high activity, a series of 2‐arylthio‐1,4,2,‐triazolo[1,5‐a]pyrimidines (3) were synthesized by cyclization of 5‐amino‐3‐arylthio‐1,2,4‐triazoles with 1, 3‐diketones or by the nucleophilic substitution of substituted thiophenols with 2‐methylsulfonyl‐l,2,4‐triazolo [1,5‐a]‐pyrimidine. The structures of all compounds prepared were confirmed by 1H NMR and MS spectroscopy along with elemental analyses. Preliminary bioassays indicated that some of the compounds 3 had good herbicidal activity against rape. In addition, the regioselectivity in the reaction of 5‐amino‐3‐substituted arylthio‐l,2,4‐triazoles with benzoylacetone was studied.
作者机构：
[Yang, GF] Cent China Normal Univ, Inst Organ Synth, Wuhan 430079, Peoples R China.;Nankai Univ, Inst Elementoorgan Chem, Tianjin 300071, Peoples R China.
通讯机构：
[Yang, GF] C;Cent China Normal Univ, Inst Organ Synth, Wuhan 430079, Peoples R China.
摘要：
The regioselective addition reaction of 5-amino-1,2,4-triazoles and its pyrazole analogues 1 with arylsulfonyl isocyanates were described. Experimental results showed that the addition reaction of 1 with arylsulfonyl isocyanates at room temperature took placed at the 5-position amino group and adducts 4 were obtained, however, the reaction proceeded at 1-N at the presence of sodium hydride to give products 5, which suggested that the amino nitrogen at C-5 is more nuclophilic than 1-N in this reaction system. In addition, molecular mechanic calculations were applied to explain the regioselectivity.
摘要：
The following reactions 2Zn(Ac)(2) . 2H(2)O (s) + H5IO6 (s) --> Zn2HIO6 . 1.25H(2)O (s) + 4HAc (1) + 2.75H(2)O (1) 2Cd(Ac)(2) . 2H(2)O (s) + HsIO(6) (s) --> Cd2HIO6 . 1.25H(2)O (s) + 4HAc (1) + 1.25H(2)O (1) 2Cu(Ac)(2) . H2O (s) + H5IO6 (s) --> Cu2HIO6 2H(2)O (s) + 4HAc (1) have been studied. The molar dissolution enthalpies of the reactants and products in a certain solvent (3 M l(-1) HNO3) of this three reaction have been measured using an isoperibol calorimeter at 298 K. From these values, combined with auxiliary values, the standard molar formation enthalpies of Zn2HIO6.1.25H(2)O (s), (298.2K), Cd2HIO6.1.25 H2O (s), (298.2K) and Cu2HIO6.2H(2)O (s), (298.2 K) have been determined to be Delta(f)H(m)(theta), (Zn2HIO6.1.25 H2O (s), 298.2 K) = -1342.11 kJ mol(-1) Delta(f)H(m)(theta) (Cd2HIO6.1.25H(2)O (s), 298.2 K) = -1405.49 kJ mol(-1) and Delta(f)H(m)(theta) (Cu(2)HIO(6)2H(2)O (s), 298.2 K) = -1226.08 kJ mol(-1) (C) 2000 Elsevier Science B.V. All rights reserved.
作者机构：
[Wu, TJ; Zeng, GP; Ding, MW] Cent China Normal Univ, Inst Organ Synth, Wuhan 430079, Peoples R China.
通讯机构：
[Ding, MW] C;Cent China Normal Univ, Inst Organ Synth, Wuhan 430079, Peoples R China.
摘要：
2-Amino-3H-quinazolin-4-ones 8 were prepared from tandem aza-Wittig reaction of iminophosphorane 5 with aromatic isocyanate and nucleaphilic reagent HY in mild condition.
期刊：
Inorganic and Nano-Metal Chemistry,2000年30(4):683-693 ISSN：2470-1556
通讯作者：
Liao, ZR
作者机构：
[Liao, ZR] Cent China Normal Univ, Dept Chem, Wuhan 430079, Peoples R China.;Nanjing Univ, State Key Lab Coordinat Chem, Nanjing 210093, Peoples R China.;Wuhan Univ, Anal & Testing Ctr, Wuhan 430072, Peoples R China.
通讯机构：
[Liao, ZR] C;Cent China Normal Univ, Dept Chem, Wuhan 430079, Peoples R China.
摘要：
A diiron(III) complex, [Fe-2(IDB)(2)(mu-O)(mu-OAc)(2)]Cl-2. CH3OH, in which IDB is N,N-di(2-benzimidazolylmethyl)imine, has been characterized by single-crystal X-ray diffractometry and spectrometry. The compound crystallizes in the space group C2/C with a = 23.700(5), b = 20.690 (5), c = 17.721 (9) Angstrom, beta = 111.19(4)degrees, V = 8101.7(7) Angstrom(3) Z = 8 and is solved for 3120 reflections with I > 4.0 sigma(I), giving final R = 0.09840 and Rw = 0.11914. The two iron(III) atoms of the binuclear unit are bridged by one oxo atom and two acetate groups, affording a diiron core with a Fe-O-Fe angle of 116.8(6)degrees and Fe-Fe distance of 3.118 Angstrom. Each iron atom is bound to a facially coordinating tridentate ligand IDB with the aliphatic nitrogen donor situated trans to the mu-oxo atom and in a distorted octahedral geometry. The structural data, electronic absorption, infrared and Raman spectra of the compound are very similar to those of other compounds containing the [Fe-2(mu-O)(mu-RCO2)(2)](2+) core.
摘要：
Abstract Ten 1-substituted arylaminopropyl silamnes (1-X) were synthesized by the reaction of aromatic amines with chloropropyl silatrane and aryl chloride with aminopropyl silatrane respectively. Their structures were identified by elemental analysis. IR, 1HNMR, and MS measurement. An antimicrobial test was done and the result showed that some of them had obvious antibacterial activity.
期刊：
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS,2000年156(1):173-179 ISSN：1042-6507
通讯作者：
He, LN
作者机构：
[He, LN] Cent China Normal Univ, Inst Organ Synth, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Ct Anal & Testing, Wuhan 430079, Peoples R China.
通讯机构：
[He, LN] C;Cent China Normal Univ, Inst Organ Synth, Wuhan 430079, Peoples R China.
摘要：
Abstract The derivatives of 4-aryl-1,3,2-dioxaphosphorinane-2-sulfide, namely, 4-aryl-5,5-dimethyl-1,3,2-dioxaphosphorinane-2-sulfides (6) were synthesized in moderate yields by the cyclization reaction of 1-aryl-2,2-dimethyl-1,3-propanediols(5) with Lawesson's reagent using acetonitrile as a solvent. 8-Membered cyclic trithiopyrophosphonates (7) were isolated as side-products.
