Reactions of Recoil <sup>38</sup> CI Atoms with Dichlorotoluenes

Chandrasekhar, N.; Bhave, R. N.; Rao, B. Sanjeeva

doi:10.1524/ract.1984.36.4.163

Cited by 3 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The variation of the organic yields as a function of the mole fraction of the diluent (see Fig. 1) is quite similar to that reported earlier [3,10] with other systems. The calculated reactivity parameters are shown in Table 2.…”

Section: Evaluation Of Reactivity Parameterssupporting

confidence: 88%

“…Similarly, the hot zone yields in the corresponding mixtures with 2-chloro-6-fluorotoluene are also higher than the thermal yields. The results with regard to S and S' values are not different from the earlier experiments [3,10]. …”

Section: Evaluation Of Reactivity Parameterscontrasting

confidence: 56%

“…Our work with mono-and dichlorotoluenes [3,4] has shown that the yields of 38 Cl-for-Cl substitution via thermal ipso attack are lower than in the corresponding chlorobenzenes due to the presence of the CH 3 group. The results for 38 CI atoms with α-chlorotoluenes and their substituted derivatives in the presence of I 2 are contrary to the normal behaviour observed with other arenes [3 b] as both the total organic and parent yields in C 6 H 5 CH 2 C1, C 6 H 5 CHC1 2 and C 6 H S CC1 3 were enhanced by the addition of I 2 , which was explained on the basis of nucleophilic substitution of intermediate benzyliodides by thermal 38 CI" ions.…”

Section: Introductionmentioning

confidence: 80%

“…Intermolecular competition experiments were performed in order to understand the mechanism and selectivity effects for hot and thermal substitution reactions. To gain more information on these aspects, we chose chlorotoluenes and some substituted derivatives as typical systems [3,4] whilst equimolar mixtures of substituted chlorobenzenes were used by others [5 -7].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Recoil ³⁸CI Reactions with Halobenzenes: Substituent Effects

Chandrasekhar¹,

Rao²

1989

Radiochimica Acta

Self Cite

View full text Add to dashboard Cite

Reactions of recoil 3 8 CI atoms with substituted halobenzenes have been investigated. The organic yields in all the investigated systems were enhanced when the samples were exposed to a relatively high accompanying gamma dose. The results suggest that the substituent F on the benzene ring has no effect on the reactions of recoil 3, C1 atoms. I 2 had no effect on the yields measured with o-and p-C 6 H 4 FCH,Cl compounds, suggesting the absence of thermal reactions. However, both the total organic and parent yields were considerably reduced in o-and p-C 6 H 4 C1CF 3 compounds when I 2 was added. The lower 38 C1-for-Cl substitution yield in o-C"H 4 C1CFJ than that in para isomer was attributed to steric effects. Relative reactivities of recoil CI in mixtures of some of the investigated compounds were evaluated using the model developed by KONTIS and URCH.

show abstract

Section: Evaluation Of Reactivity Parameterssupporting

confidence: 88%

Section: Evaluation Of Reactivity Parameterscontrasting

confidence: 56%

Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Recoil ³⁸CI Reactions with Halobenzenes: Substituent Effects

Chandrasekhar¹,

Rao²

1989

Radiochimica Acta

Self Cite

View full text Add to dashboard Cite

show abstract

“…These studies were performed with the aim of gaining insight into the mechanisms of the hot and thermal substitution and abstraction processes as well as selectivity effects by measuring the total organic, substitution and Polymerie yields [3][4][5][6][7]. Chlorotoluenes, among the arenes, seem to provide valuable Information on these aspects and we have, therefore, undertaken a detailed investigation on the reactions of recoil "Cl atoms with these Compounds [8][9][10][11]. Some of the findings and conclusions of our work were: 1) In neat chlorotoluenes [8], the total organic and parent yields for the meta isomer are lower than for the ortho and para isomers.…”

Section: Introductionmentioning

confidence: 99%

Reactions of Recoil ³⁸Cl Atoms with α-Chlorotoluenes

1985

Self Cite

View full text Add to dashboard Cite

Recoil "Cl/a-Otlorotoluenes/Reactivity parameters AbstiactReactions of recoil "Q atoms with a-chlorotoluenes and substituted a-chlorotoluenes are investigated. While the total organic yieldsinCjHsCHjCl, CeHjCHClj andC^HjCCl, increasewith the increasing number of C1 atoms, the parent yields remain more or less the same. The yields in these systems in the presence of I, are enhanced contrary to the normal behaviour observed with arenes suggesting a nucleophilic substitution of benzyl iodides by thermal "Cl" ions. However, the yields in the substituted achlorotoluenes are not affected by I, due to the possibility of thermal ipso attack in unscavenged systems. The reactivity Parameters in mixtures of the investigated Compounds with methanol, cyclohexane and high ir-electron density scavengers are evaluated by the model of KONTIS and URCH and the underlying chemical processes are discussed.

show abstract

Studies on structure–reactivity in the reaction of OH radicals with substituted halobenzenes in aqueous solutions

Mohan¹,

Mudaliar²,

Aravindakumar³

et al. 1991

J. Chem. Soc., Perkin Trans. 2

View full text Add to dashboard Cite

The reaction of OH radicals with a number of substituted halobenzenes (C, H, -, X, Y, where X = F, CI or Br and Y = CH3, CH,CI, CHCI,, CF, or OCH,) produces a transient absorption band whose A,,, is in the range 31 0-340 nm. This band is assigned to the OH adduct and decayed with second-order kinetics, the bimolecular rate constant being in the region of 0.6 x lo9 -5.0 x lo9 dm3 mol-' s-I. The OH radical reacts mainly by addition to the benzene ring. The rate constants for the reaction of OH radicals, as determined from formation kinetics studies, are between 1.7 and 9.3 x I O9 dm3 mol-' s-l, and are found to depend on the nature of the substituents. A linear correlation is observed with the Hammett parameter.

show abstract

Reactions of Recoil ³⁸ CI Atoms with Dichlorotoluenes

Cited by 3 publications

References 0 publications

Recoil ³⁸CI Reactions with Halobenzenes: Substituent Effects

Recoil ³⁸CI Reactions with Halobenzenes: Substituent Effects

Reactions of Recoil ³⁸Cl Atoms with α-Chlorotoluenes

Studies on structure–reactivity in the reaction of OH radicals with substituted halobenzenes in aqueous solutions

Contact Info

Product

Resources

About

Reactions of Recoil 38 CI Atoms with Dichlorotoluenes

Cited by 3 publications

References 0 publications

Recoil 38CI Reactions with Halobenzenes: Substituent Effects

Recoil 38CI Reactions with Halobenzenes: Substituent Effects

Reactions of Recoil 38Cl Atoms with α-Chlorotoluenes

Studies on structure–reactivity in the reaction of OH radicals with substituted halobenzenes in aqueous solutions

Contact Info

Product

Resources

About

Reactions of Recoil ³⁸ CI Atoms with Dichlorotoluenes

Recoil ³⁸CI Reactions with Halobenzenes: Substituent Effects

Recoil ³⁸CI Reactions with Halobenzenes: Substituent Effects

Reactions of Recoil ³⁸Cl Atoms with α-Chlorotoluenes