ISSN:0165-0513    

DOI:10.1002/recl.19660850112

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

摘要:

AbstractUnbranched aliphatic diperoxycarboxylic acids of short chain length can be included in urea by acetylation in the presence of the latter compound. The reactions carried out with diperoxysuccinic, diperoxyadipic and diperoxyazelaic acid proceed almost quantitatively at room temperature. The diacetic diperoxycarboxylic anhydrides thus stabilized readily react with hydrogen peroxide in aqueous solution at room temperature, yielding mixtures of peroxyacetic and diperoxycarboxylic acid in high yield.Non‐included 3,3′‐dicarboxypropionyl and acetyl 3‐carboxypropionyl peroxide also form peroxy acids under these conditions. However, perhydrolysis of non‐includedn‐acyl peroxides R‐C∥‐O‐O

ISSN:0165-0513    

DOI:10.1002/recl.19660850113

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

摘要:

AbstractThe activation energies of the dissociation of someortho‐alkyl‐substituted symmetrical tetraphenylethanes were determined by measuring the reaction rates of these compounds with oxygen inm‐xylene solutions. The values found are 25.3, 22.9 and 19.6 kcal/mole for symm.tetra(2‐tert‐butylphenyl)ethane, symm.‐tetra(2,6‐dimethylphenyl)ethane and symm.tetra(2,6‐diethylphenyl)ethane, respectively. The frequency factors and activation entropies of the dissociation reaction were obtained from the same measurements. Using the known data on the dissociation equilibria, we also calculated the relevant kinetic values for the recombin

ISSN:0165-0513    

DOI:10.1002/recl.19660850114

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

摘要:

AbstractThe isomer distribution in the homogeneous sulfonation oft‐butylbenzene in 74.0‐103.0 wt‐% sulfuric acid has been determined at various temperatures.Ortho‐substitution does not take place. The degree ofmeta‐substitution is low under all conditions. The partial rate factors forpara‐ andmeta‐substitution in 86.3 wt‐% H2SO4at 25° are 53 ± 6 and 3.0 ± 0.3 respectively.Isomerization ofp‐ andm‐t‐butylbenzenesulfonic acids is relatively insignificant at

ISSN:0165-0513    

DOI:10.1002/recl.19660850115

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

摘要:

AbstractThe nature of the chemiluminescence phenomenon generally observed during oxidation of organic substances at elevated temperatures, was studied on the system dicumyl peroxide‐polypropylene. Arguments are put forward in favour of the assumption that the luminescence observed during decomposition of dicumyl peroxide, should be interpreted as phosphorescence of the reaction product acetophenon

ISSN:0165-0513    

DOI:10.1002/recl.19660850116

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19660850117

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19660850101

出版商:WILEY‐VCH Verlag    

年代:1966

数据来源: WILEY