Organophosphorus chemistry. Part X. Reaction of dimethyl- and bis(trifluoromethyl)-phosphines with trifluoroethylene

doi:10.1039/J39700000744

Paper

Organophosphorus chemistry. Part X. Reaction of dimethyl- and bis(trifluoromethyl)-phosphines with trifluoroethylene

Published 1970 · R. Fields, R. Haszeldine, N. F. Wood

Journal of The Chemical Society C: Organic

UNKNOWN SJR score

5

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Abstract

Dimethyl- and bis(trifluoromethyl)-phosphines react smoothly with trifluoroethylene under u.v. irradiation to give good yields of 1 : 1 addition products. Bis(trifluoromethyl)phosphine gives almost exclusively 1,2,2-trifluoro-ethylbis(trifluoromethyl) phosphine, as expected on the basis of the stabilities of the two possible intermediate free radicals. Dimethylphosphine gives dimethyl-1,2,2-trifluoroethylphosphine, expected on the basis of intermediate radical stability, and an almost equal amount of the 1,1,2-trifluoroethyl isomer. The proportion of attack on the CF2 group of trifluoroethylene is thus higher for Me2P than that for any radical previously reported. The product distribution for the series of radicals Me2P, H2P, (CF3)2P is related to the electronic effects of the groups attached to phosphorus.

Study Snapshot

Dimethyl- and bis(trifluoromethyl)-phosphines react smoothly with trifluoroethylene under uv irradiation to yield good yields of 1 : 1 addition products, with the proportion of attack on the CF2 group being higher for Me2P than for any radical previously

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Organophosphorus chemistry. Part X. Reaction of dimethyl- and bis(trifluoromethyl)-phosphines with trifluoroethylene

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