摘要:

AbstractThe spatial configuration of benzoquinuclidine (I) is such as to justify on theoretical grounds the assumption that the mesomeric interaction between the amino group and the benzene ring is at a minimum. The experimental work reported here proves that this interaction is in fact essentially zero, and hence that, in general, elimination of mesomerism by steric factors is possible. This result was obtained by a study of ultraviolet absorption spectra and of the ability to couple with diazonium compounds.

ISSN:0165-0513    

DOI:10.1002/recl.19520711202

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractIn this paper it is shown that the low basic strength of aromatic amines as compared with aliphatic amines is equally due to the inductive and the mesomeric effect; each of these is responsible for a decrease of about three pKaunits. On this basis the (extra) mesomeric energy of aromatic amines is calculated as 4 kcal/mol.

ISSN:0165-0513    

DOI:10.1002/recl.19520711203

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractThe present paper is a continuation of current work on dithiocarbamic acid derivatives.By using four test organisms a limited antifungal spectrum is obtained for each compound investigated. These antifungal spectra can be subdivided into four different specificity types, each type comprising compounds or groups of compounds which may be related as to their general mode of antifungal action. This subdivision is supported by the results of respiration measurements. Theoretical considerations allow a more profound specification of the relations between constitution and antifungal activity in the dithiocarbamic acid series.

ISSN:0165-0513    

DOI:10.1002/recl.19520711204

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractAzo‐dyestuffs have been prepared from 6‐amino‐2,3‐dihydro‐3‐ketobenzo‐1,4‐thiazine by coupling with various hydroxy‐compounds and with anthranilic acid. Some of them have shown depressant effects onAscaris lumbricoidesand liver fluke (Fasciola hepatica)in vitro, and gave good shades and wool. All the colours w

ISSN:0165-0513    

DOI:10.1002/recl.19520711205

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractThe isomorphous replacement of two elements simultaneously by two others is symbolized by a square matrix. Again three such matrices, representing the cyclic replacement of two elements out of three by two others, may be contracted into one matrix of three columns and two rows. In all these the coordinative binding of aluminium is indicated by its place.These symbols may be combined with one another, or with existing symbols concerning the isomorphous replacement of one element by one other. Thus a clear survey of silicate chemistry is obtained.By placing appropriate coefficients above the columns of the matrix, a particular mixed crystal may be represented. On the strength of this, an opinion is advanced as to the most probable composition of sarcolite.

ISSN:0165-0513    

DOI:10.1002/recl.19520711206

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractA solution of mercurous nitrate gives off mercury vapour at room temperature due to the occurence of the equilibrium.

ISSN:0165-0513    

DOI:10.1002/recl.19520711207

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractIn connection with the tuberculostatic and pharmacological properties of 4‐hydroxy‐6‐amino‐isophthalic acid (4‐hydroxy‐6‐aminobenzene‐1,3‐dicarboxylic acid) a synthesis with 4,6‐dinitro‐m‐xylene (1,3‐dimethyl‐4,6‐dinitrobenzene) as starting material is described. Other alternate routes are discussed.A convenient procedure for preparing 4,6‐dinitro‐m‐xylene f

ISSN:0165-0513    

DOI:10.1002/recl.19520711208

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractThe syntheses of three linear condensation products of ε‐aminocaproic acid of a low degree of condensation, H[NH(CH2)5CO]xOH x = 3, 4 and 5, are described. The purification of these compounds has been accomplished by means of chromatographic adsorpti

ISSN:0165-0513    

DOI:10.1002/recl.19520711209

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractLa réaction de SO2sur le diphényldiazométhane en présence d'amines aliphatiques primaires et secondaires conduit aux amides substitués de l'acide diphénylméthanesulfonique. On peut admettre que les amines se fixent sur la double liaison d'un sulfène interm

ISSN:0165-0513    

DOI:10.1002/recl.19520711210

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY

摘要:

AbstractAyant complété la série des thioxanthène‐10‐dioxydes, substitués en position 9 par des groupes méthylthio et méthylsulfonyle, les auteurs ont étudié l'hydrolyse acide et basique de ces composés, qui peuvent être envisagés comme des vinylogues de 1,1‐disul

ISSN:0165-0513    

DOI:10.1002/recl.19520711211

出版商:WILEY‐VCH Verlag    

年代:1952

数据来源: WILEY