34450-24-3Relevant articles and documents
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. V. ANOMALOUS CHLORINATION OF ETHYLENE COMPOUNDS CONTAINING A CHLORINE ATOM AT THE DOUBLE BOND
Mkryan, G. G.,Kaplanyan, E. E.,Mkryan, G. M.
, p. 1398 - 1402 (2007/10/02)
The liquid-phase chlorination of isomeric dichlorobutenes in a nonpolar medium was investigated in the presence of tert-butylpyrocatechol and without additions.The addition of tert-butylpyrocatechol leads to an increase in the yield of the products from anomalous chlorination and to a decrease in the yield of the products from normal addition.Increase in temperature during the chlorination of dichlorobutenes in the absence of tert-butylpyrocatechol promotes the formation of the normal addition products.It was suggested that the anomalous reaction, which leads to chlorides of the allyl and vinyl types, takes place by a molecular mechanism while the normal addition reaction takes place by both mechanism (molecular and radical).
