Kinetics and mechanism of pyrolysis of sulphonyl hydrazones and oximes. Part 2 - Structural effects and molecular reactivity

被引：0

作者：

Al-Awadi, NA ^{[1
]}

Elnagdi, MH ^{[1
]}

Kaul, K ^{[1
]}

Ilingovan, S ^{[1
]}

El-Dusouqui, OME ^{[1
]}

机构：

[1] Kuwait Univ, Dept Chem, Safat 13060, Kuwait

来源：

JOURNAL OF PHYSICAL ORGANIC CHEMISTRY | 1999年 / 12卷 / 08期

关键词：

sulphonyl hydrazones; sulphonyl oximes; pyrolysis; kinetics; mechanism; structural effects; molecular reactivity;

D O I：

10.1002/(SICI)1099-1395(199908)12:8<654::AID-POC168>3.0.CO;2-L

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The kinetics and products of the pyrolytic reaction of six tosyl arenecarboxaldoximes were studied over the temperature range ca 334 - 401 K to yield the following Arrhenius log A/s(-l) and E-a/kJ mol(-1), respectively: 10.92 and 98.25 for tosyl benzaldoxime and 10.83 and 100.4 for m-nitro-, 10.66 and 97.53 for p-chloro-, 11.80 and 107.8 for m-chloro-, 11.60 and 101.5 for p-methyl- and 10.84 and 97.75 for p-methoxybenzaldehyde O-[(4-methylphenyl) sulphonyl]oxime. At 500 K, the oxime compounds were found to be 9.4 x 10(3) - 2.7 x 10(4)-fold more reactive than their hydrazone analogues. Copyright (C) 1999 John Wiley & Sons, Ltd.

引用

页码：654 / 658

页数：5

共 16 条

[1] Kinetics and mechanism of pyrolysis of sulphonyl hydrazones and oximes. Part 1. Contribution to reactivity from hydrazone HN-@N and oxime O-@N bond polarity
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Tetrahedron, 54 (18):
[2] Kinetics and mechanism of pyrolysis of sulphonyl hydrazones and oximes. Part 1. Contribution to reactivity from hydrazone HN-N and oxime O-N bond polarity
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