Abstract: Earlier work with aliphatic carboxylate radicals held no prospect that they could be used as hydrogen abstractors in substitution reactions. Contrary to this expectation, acetoxy, propionoxy, isobutyroxy, and pivaloxy are effective in this role. At low temperatures radical chain brominations of alkanes and haloalkanes occur in satisfactory yields when the acyl hypobromites, RC02Br, are used; the selectivities are independent of the structure of R. ...
