89856-60-0Relevant academic research and scientific papers
Conformational product control in the low-temperature photochemistry of cyclopropylcarbenes
Zuev, Peter S.,Sheridan, Robert S.,Sauers, Ronald R.,Moss, Robert A.,Chu, Gaosheng
, p. 4963 - 4966 (2007/10/03)
Different conformers of two fused-ring cyclopropylchlorocarbenes are shown to undergo distinct, wavelength-selectable, photochemistry in low-temperature matrixes. Conformers with H and Cl syn give ring expansion predominantly, whereas those with H and Cl anti mainly fragment.
Activation energies for the 1,2-carbon migration of ring-fused cyclopropylchlorocarbenes
Chu, Gaosheng,Moss, Robert A.,Sauers, Ronald R.,Sheridan, Robert S.,Zuev, Peter S.
, p. 4137 - 4141 (2007/10/03)
Fused-ring cyclopropylchlorocarbenes 2 and 3 ring expand to fused-ring chlorocyclobutenes 10 and 11, respectively, with activation energies of 3-4 kcal/mol and activation entropies of ～-20 e.u. Carbon tunneling appears to be unimportant at low temperatures.
