
TY  - JOUR
A1  - Kelly, DP 
A1  - Serelis, AK 
A1  - Solomon, DH 
A1  - Thompson, PE 
T1  - The Cross-Reaction Between 1-Methoxycarbonyl-1-Methylethyl and 1-Butoxycarbonyl-1-Methylethyl: Simultaneous Generation of Unlike Radicals From an Unsymmetrical Azo Precursor
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1987
VL  - 40
IS  - 10
SP  - 1631
EP  - 1639
KW  - 
UR  - https://doi.org/10.1071/CH9871631 
N2  - 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. 
ER  -

