The azoisopropane-initiated thermal reaction of (E)-CH₃CHCHCH₃ has been studied in the temperature range 489.5–542.0 K.

For the reactions (CH₃)₂CHNNCH(CH₃)₂→ 2 2-Ċ₃H₇+ N₂(1), 2-Ċ₃H₇+(E)-CH₃CHCHCH₃→ C₃H₈+(E)-Ċ₄H₇(4), →(CH₃)₂CHCH(CH₃)ĊH(CH₃)(5), 2 2-Ċ₃H₇→(CH₃)₂ CHCH(CH₃)₂(2) the following Arrhenius parameters were determined: log(k₁/s^{– 1})=(16.42 ± 0.30)–(201.9 ± 3.0) kJ mol^{– 1}/θ, log[(k₄/k^1/2₂)/dm^3/2 mol^{– 1/2} s^{– 1/2}]=(3.64 ± 0.40)–(46.9 ± 2.1) kJ mol^{– 1}/θ, log[(k₅/k^1/2₂)/dm^3/2 mol^{– 1/2} s^{– 1/2}](2.53 ± 0.60)–(39.5 ± 2.4) kJ mol^–1/θ where θ=RT In 10.

For the cross-combination ratios of the radicals 2-Ċ₃H₇ and (Z)-Ċ₄H₇, ϕ[2-Ċ₃H₇, (Z)-Ċ₄H₇]_t= 2.12 ± 0.10 was obtained, where the subscript t refers to the terminal combination.

Formation of certain characteristic products was observed in various addition/isomerization/dissociation processes. 2-Ċ₃H₇ addition to (E)-CH₃CHCHCH₃ is suggested as the rate-determining step, followed by 1, 4- and 1,5-H-atom shifts.