71707-22-7Relevant academic research and scientific papers
Effect of pressure on the conrotatory opening of cyclobutenes. An unexpected result?
Jenner, Gerard
, p. 2771 - 2776 (1998)
Against intuitive expectation, conrotatory opening of cyclobutenes 1-4 is slightly promoted by pressure with activation volumes around -2 to -3 cm3.mol-1. The volume profile shows a minimum for the transition state TS. This result together with low activation entropy values demonstrates full concertedness and suggest a cyclic TS with a preferential orbital topology.
