摘要:

AbstractMeasurements of the diffusion coefficients of products of the oxidation of phloroglucinol indicate that substances are formed containing a number of benzene rings per molecule.

ISSN:0165-0513    

DOI:10.1002/recl.19560751102

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

摘要:

AbstractThe existence of free radicals in the oxidation of phloroglucinol could be proved by initiating the polymerization of styrene.

ISSN:0165-0513    

DOI:10.1002/recl.19560751103

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

摘要:

AbstractFrom the “toxisterol2” mixture obtained by prolonged U.V. irradiation of ergosterol two or possibly three hitherto unknown compounds have been isolated in the form of crystalline est

ISSN:0165-0513    

DOI:10.1002/recl.19560751104

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

摘要:

AbstractA new cystine homologue IV showing [α]D−260° has been prepared by applying the Arndt‐Eistert reaction to S‐benzyl‐N‐phthaloyl‐l‐cysteine (I). The high [α]Dof this compound supportsFredga's explanation of the high rotatory

ISSN:0165-0513    

DOI:10.1002/recl.19560751105

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

摘要:

AbstractFrom the reaction mixtures obtained by brominating and nitrating 2‐hydroxypyridine‐N‐oxide the sole disubstituted products isolated were the 3,5‐derivatives. The course of the bromination and nitration of 2‐hydroxypyridine‐N‐oxide differs from the analogous reactions of 2‐hydroxypyridine only in an increased re

ISSN:0165-0513    

DOI:10.1002/recl.19560751106

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

摘要:

AbstractThe electrical free energy of micelle formation is treated for spherical micelles with a Gouy type double layer, allowing for high surface charge. Use is made of double layer computations carried out byHoskinfor spherical particles with high surface potential. A procedure is developed for interpolating betweenHoskin's results. A correction is applied for the difference between the smeared out surface charge as in the model calculations and the actual assembly of discrete charges.From the equilibrium equation for micellization in which this electrical free energy occurs together with terms depending on the concentrations of free ions and of micelles the non‐electrical part of the standard free energy of micelle formation (W‐TΔSo) can be calculated.The method is applied to micelles of sodium lauryl sulphate in aqueous sodium chloride solutions. In this system W‐TΔSois found to be nearly independent of micelle size and slightly above 1 kT per carbon atom in the chain. Comparison with other data on the free energy change in the transfer of aliphatic chains from water to non‐polar surroundings shows excellent

ISSN:0165-0513    

DOI:10.1002/recl.19560751107

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19560751108

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

摘要:

AbstractThe separation of 2,4‐dinitrophenylhydrazones of aliphatic carbonyl compounds having 7 or more carbon atoms is possible by means of paper chromatography, employing paraffin oil as immobile phase and dioxan/water (4:1) as mobile phas

ISSN:0165-0513    

DOI:10.1002/recl.19560751109

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

摘要:

AbstractIn the reaction between phenol and formaldehyde in aqueous solution at 90° C and pH = 5.5‐6.5 about 58%orthosubstitution and 42 %parasubstitution takes place initially.A colorimetric method for the determination of methylol phenols in solution is describ

ISSN:0165-0513    

DOI:10.1002/recl.19560751110

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY

摘要:

AbstractIt is shown that during the reaction betweenp‐toluenesulphonyl chloride and pyridine‐N‐oxide, among other substances, N‐(2′‐pyridyl)‐5‐chloropyridone‐2 is forme

ISSN:0165-0513    

DOI:10.1002/recl.19560751111

出版商:WILEY‐VCH Verlag    

年代:1956

数据来源: WILEY