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Synthesis and properties of peroxydicarbonates containing alkylaromatic fragments

Synthesis and properties of peroxydicarbonates containing alkylaromatic fragments. Etlis, I. V.; Fomin, V. A.In this study， 4170-90-5 and 138556-74-8 are also used.; Nozrina, F. D. (Nauchno-Issled. Inst. Khim.-Tekhnol. Polim., USSR). Zh. Org. Khim., 27(11), 2269-75 (Russian) 1991. CODEN: ZORKAE. ISSN: 0514-7492. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Sym. peroxydicarbonates RCH2OCO2O2COCH2R (I; R = substituted Ph) were prepd. in 61-78% yield by peroxidn. of chloroformates RCH2O2CCl (formed in 3 98% yield from RCH2OH and COCl2) with Na2O2. Increase of steric hindrance in the series R = 2,5-Me2C6H3 < 2,4,6-Me3C6H2 < 2,3,5,6-Me4C6H < 1-naphthyl dictated use of katamin AB phase-transfer peroxidn. catalyst. Asym. peroxydicarbonates RCH2OCO2O2COCH2R' (same R, R' = cyclohexyl) were prepd. by reaction of chloroformates with R'O2CO2H. I derivs. possessing 2 o-Me groups were the most stable toward thermolysis. The rate of thermolysis of the asym. derivs. was detd. by the aryl fragment. .