14499-87-7Relevant academic research and scientific papers
UNSATURATED COMPOUNDS. XV. LIQUID-PHASE LOW-TEMPERATURE CHLORINATION OF 2-CHLORO- AND 2,3-DICHLORO-2-BUTENES IN THE PRESENCE OF FERRIC CHLORIDE
Kaplanyan, E. E.,Mkrtchyan, A. M.,Voskanyan, E. S.
, p. 41 - 43 (2007/10/02)
The effect of anhydrous ferric chloride on the degree of normal and anomalous chlorination of 2-chloro- and 2,3-dichloro-2-butenes at low temperatures (-20 to 0 deg C) in the presence of tert-butyl pyrocatechol was investigated.It was established that the addition of ferric chloride leads to a significant decrease in the amount of anomalous chlorination products.At the same time an increase is observed in the chlorination rate of trans-2,3-dichloro-2-butene. During the chlorination of 2,3-dichloro-2-butene under the influence of ferric chloride the anomalous chlorination product 2,3,3-trichloro-1-butene isomerizes to 1,2,3-trichloro-2-butene.
INVESTIGATION IN THE FIELD OF UNSATURATED COMPOUNDS. XII. BEHAVIOUR OF 2,3-DIHALOGENO-2-BUTENES DURING LIQUID-PHASE CHLORINATION IN THE PRESENCE OF AN INHIBITOR OF RADICAL REACTION
Kaplanyan, E. E.,Mkryan, G. G.,Adamyan, A. P.,Mkryan, G. M.
, p. 2014 - 2020 (2007/10/02)
Both normal addition products (tetrahalogenobutanes) and anomalous reaction products (2,3,3-trihalogeno-1-butenes) are formed during the liquid-phase chlorination of 2,3-dihalogeno-2-butenes (2,3-dichloro-, 2-chloro-3-bromo-, and 2,3-dibromo-2-butenes) in the presence of an inhibitor of radical reactions.Below 20 deg C the cis isomers are chlorinated more rapidly than the trans isomers, mainly forming the anomalous reaction products.During chlorination above 20 deg C (20-40 deg C) the process is complicated by the partial isomerization of the 2,3,3-trihalogeno-1-butene which forms into 1,2,3-trihalogeno-2-butene and, in the case of the bromine-substituted butenes, by substitution of the bromine atom by chloring.
INVESTIGATION IN THE FIELD OF UNSATURATED COMPOUNDS VI. LIQUID-PHASE CHLORINATION OF 2-HALOGENO-2-BUTENES
Mkryan, G. G.,Kaplanyan, E. E.,Mkryan, G. M.
, p. 1833 - 1836 (2007/10/02)
The liquid-phase chlorination of 2-halogeno-2-butenes in the presence of tert-butylpyrocatechol leads to the formation of the products from an anomalous reaction (2,3-dihalogeno-1-butenes), substitution of hydrogen at the double bond (2,3-dihalogeno-2-butenes), and normal addition (2,2,3-trihalogenobutanes).The ratios of these compounds are 70:6:24 in the case of 2-chloro-2-butene and 54:7.5:38.5 in the case of 2-bromo-2-butene.During the chlorination of 2-chloro-2-butene in the presence of sodium bicarbonate the formation of 3-chloro-2-butanol (20percent) was observed as a result of the combined addition of chlorine and water.
