
%0 Journal Article
%A Kelly, DP 
%A Serelis, AK 
%A Solomon, DH 
%A Thompson, PE 
%T The Cross-Reaction Between 1-Methoxycarbonyl-1-Methylethyl and 1-Butoxycarbonyl-1-Methylethyl: Simultaneous Generation of Unlike Radicals From an Unsymmetrical Azo Precursor
%J Australian Journal of Chemistry
%D 1987/10/01
%V 40
%N 10
%P 1631-1639
%K 
%R https://doi.org/10.1071/CH9871631
%U https://www.publish.csiro.au/paper/CH9871631 
%X The title radicals (1a) and (1b) were generated simultaneously by thermolysis of the unsymmetrical diazene, butyl methyl azoisobutyrate (2d). In the presence of the radical scavenger 2,2,6,6- tetramethylpiperidin-1-yloxyl (4) the products of the geminate cross-reaction show that 45% of radical pairs react by combination and 55% by disproportionation. The disproportionation reaction shows a slight preference for hydrogen transfer from the butyl ester (lb) to the methyl ester (la) radical. In the absence of scavenger (4), the encounter reactions of the two radicals show a slight preference for the cross-reaction over the two self-reactions which is most likely largely due to the imbalance in radical concentrations caused by the greater reactivity toward addition to olefins of the methyl ester radical. 
