- Monofunctionalized Tridecachlorodiphenyl(2-pyridyl)methyl Radicals. Synthesis and Spectral Analysis
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Highly chlorinated diphenyl(2-pyridyl)methyl radicals and their α-H precursors with a carboxy, chlorocarbonyl, or allyloxycarbonyl substituent in the 4-position of one phenyl ring have been synthesized.All of them are stable red solids, completely dissociated (magnetic susceptibility), decomposing when melting (200-240 deg C).Their ESR, UV-Vis and IR spectra are given.
- Julia, Luis,Riera, Juan,Teixido, Ramon
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p. 1101 - 1105
(2007/10/02)
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- DESTRUCTIVE CHLORINATION OF ALKYLBENZENES ON HETEROGENEOUS CATALYSTS.
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A study was made of the destructive chlorination of alkylbenzenes in the vapor phase on metal oxides and metal chlorides. This work shows that 380-400 degree C, 11-12 sec contact time, 0. 3-0. 8 mass % MoO//3 on alumina, 7-10% stoichiometric excess of chlorine, and 1:9 toluene/chlorine mole ratio were optimal for the chlorination of toluene to give C//6Cl//6 and CCl//4. The optimal conditions for the preparation of pentachlorobenzyl chloride were 295-320 degree C, 18-22 sec contact time, 1:6 toluene/chlorine mole ratio, and 4-8. 5 mass % MgCl//2 on KSK silica gel. The optimal yields of CCl//4 and C//6Cl//6 were 97. 4-98. 2 and 93. 8-96. 3 mole %, respectively, with 91-93 mole % conversion of chlorine.
- Potapov,Valitov,Evdokimova
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p. 321 - 324
(2007/10/02)
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- Chlorination process
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Process for nuclear chlorination of non-phenolic aromatic compounds, said process comprising contacting and reacting a non-phenolic aromatic compound having a net Hammett ? value of about -0.1 to about 2.0 with chlorine monoxide in the presence of at least one-half an equivalent amount, based on the chlorine monoxide, of an acid having a pKa no greater than that of trichloroacetic acid, provided, however, when the net Hammett ? value is about 0.7 to about 2.0, the acid has a pKa no greater than that of trifluoroacetic acid.
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