Tetrahedron p. 2771 - 2776 (1998)
Update date:2022-08-11
Topics:
Jenner, Gerard
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.
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