摘要:

AbstractThe interaction between trans‐1,2‐diaminocyclohexane‐N, N, N', N'‐tetraacetic acid (H1DCTA or H4Z) and Mn(II) and Ni(II) ions has been investigated. The formation constants of the hydrogen chelates (MHZ−), and of the normal chelates (MZ2−), have been measured at 20, 30 and 40°C, and an ionic strength of 0.10 (KNO3). The former was done by a titration technique and the latter by a mercury indicator electrode method. Enthalpy and entropy changes characterizing the formation of the normal chelates have been calcul

ISSN:0009-4536    

DOI:10.1002/jccs.197800011

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractDirect trimethylsilylation of naphthalene under certain condition has been found to afford substitution as well as addition products: 1‐and 2‐trimethylsilylnaphtalene (I, II), 1‐trimethylsilyl‐1,4‐dihydronaphthalene (III), trans‐1,2‐bis(trimethylsilyl)‐1,2‐dihydronaphthalene (IV‐a) and its isomer (IV‐b), and 1,2,4‐tris(trimethylsilyl)‐1,2‐dihydronaphthalene (V). The configuration has been determined by nmr spectroscopy, and the possible

ISSN:0009-4536    

DOI:10.1002/jccs.197800012

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractFrom the hexane extractive of the wood ofPinus luchuensisMayer, α‐pinene, β‐pinene, camphene, camphor, 4‐terpineol, α‐terpineol, carvacrol, tetracosanol, hexacosanol, octacosanol, β‐sitosterol, stigmasterol, methyl dehydroabietate, pinosylvin monomethylether, pimaric acid, dehydroabietic acid and straight chain hydrocarbons C23‐C

ISSN:0009-4536    

DOI:10.1002/jccs.197800013

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractA series of N‐homocyclylcarbamoyl derivatives of maleamic acid and maleimide was prepared for hypocholesteremic and sulfhydryl‐binding tests. The synthetic reactions involved in the controlled aminolysis of maleic anhydride with appropriate mono‐substituted ureas and the resulting carbamoylmaleamic acids were then thermally dehydrated to the corresponding carbamoylmaleimides. The monosubstituted ureas required in this synthesis were obtained by the action of amines on isocyanic acid producedin situfrom nitrourea on heating in aqueous alcoholic sol

ISSN:0009-4536    

DOI:10.1002/jccs.197800014

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractDilithium derivatives of ketoximes react with alkyl halides to give α‐substituted oximes. The dilithium derivatives are proposed to involve chelate formation. And the product oximes are the less stable (Z‐) ox

ISSN:0009-4536    

DOI:10.1002/jccs.197800015

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

Abstract(E)‐1‐Alkanesulfonyl‐ and (E)‐1‐arylsulfonyl‐2‐phenylethenes (styryl sulfones) were obtained from good to excellent yields by the base‐catalyzed elimination of the corresponding β‐chlorosulfones. The latter were obtained, respectively, by additions of the alkanesulfonyl‐ and the arylsulfonyl chlorides to styrene under the catalytic action

ISSN:0009-4536    

DOI:10.1002/jccs.197800016

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractReactions of biscyclopentadienyl niobium(IV) dichloride and bisindenyl niobium(IV) dichloride with sodium or potassium salts of various pseudohalides have been studied and the pseudohalide complexes so formed of the formulae (C5H5)2Nb(Ps)2and (C2H7)2Nb(Ps)2where Ps may be NC, NCO, NCS, or N3, have been isolated. The complexes have been characterised on the basis of physical measurements, analytical data and infrared spectral studies.

ISSN:0009-4536    

DOI:10.1002/jccs.197800017

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractCopper(II) aryl carboxylates on interaction with 2‐picoline N‐Oxide (2‐picNO), 3‐picoline N‐Oxide (3‐picNO) and 4‐picoline N‐Oxide (4‐picNO) in acetone or ethyl acetate yield 1:1 adducts. These are regarded as binuclear bridged complexes of composition Cu2(RC6H4COO)2L2where R iso‐, m‐,p‐CH2;o‐,m‐Cl: o‐NO2;m‐, p‐CH2O; and L is 2‐, 3‐, and 4‐picNO ligand. With 4‐picNO

ISSN:0009-4536    

DOI:10.1002/jccs.197800018

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY

摘要:

AbstractThe reactions of uranium pentaethoxide with salicylic acid have been carried out in different stoichiometric ratios, yielding products of the type, U(OEt)3(C7H4O3), U(OEt)(C7H4O3)2, U(C7H4O2)2(C7H4O3), and U2(C7H4O3)3. A detailed study of the complexation reactions of uranyl ion with salicylic acid have also been made by potentiomertic and conductometric methods. The formation of 1:1 and 1:2 complexes have been confirmed by preparative studies. Two compounds, viz. (C5H6N)2UO2(C7H4O3)2(NH4)2UO2(C7H4O3)2have been isolated.

ISSN:0009-4536    

DOI:10.1002/jccs.197800019

出版商:WILEY‐VCH Verlag    

年代:1978

数据来源: WILEY