- Ozonolyses of Olefins with Chloro Substituents in Vinylic Positions on Polyethylene
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Ozonolyses of the chloro-substituted 5- and 6-membered cycloolefins 20a, 20b and 30a-c on polyethylene afforded the corresponding chloro-substituted ozonides.The thermal decomposition of these ozonides is described.Ozonolyses of the same olefins in solution and of the acyclic chloro olefins 5 and 8 both on polyethylene and in solution gave no ozonides.
- Griesbaum, Karl,Greinert, Reinhard
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p. 391 - 397
(2007/10/02)
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- Preparation of 1,1-Dichloroalkyl Peroxycarboxylates
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1,1-Dichloroethyl hydroperoxide (4a) and 1,1-dichloropropyl hydroperoxide (4b) react with a number of acyl chlorides yield 1,1-dichloroalkyl percarboxylates 6a-q.The sensitivity of 4 to hydrolysis and thermal decomposition as well as the ready decomposition of some of the peresters lead to by-products.In certain cases the preparation of 6 does not require the isolation of the hydroperoxide 4.Thus, 6c and e are produced in satisfactory yields when ozonolysis of 2,3-dichloro-2-butene (1a) is carried out in excess propionyl or butyryl chloride.The 1,1-dichloroethyl peroxide ion (7) is presumed to be the intermediate in the ozonolysis of 1 a in the presence of tetraalkylammonium chloride.
- Gaeb, Siegmar,Turner, Walter V.,Hellpointer, Eduard,Korte, Friedhelm
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p. 2571 - 2578
(2007/10/02)
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