HCID 10071149, compound → HCID 14524037, compound

Participants

Reaction Steps

A solution of 4.45 g (0.01043 mole) of Z-(3S,5R)-[3,5-bis-(tert-butyl-dimethyl-silanyloxy)-2-methylene-cyclohexylidene]-acetic acid methyl ester (X) (A. Mourino, et al., Tetrahedron Letters, 38, pgs. 4713-4716 (1997)) in 100 ml hexane was irradiated with a UV-lamp for 3 hours. Evaporation gave 4.25 g (95.5%) of the title compound as colorless oil. NMR (CDCl3): δ0.06 (s, 3H), 0.07 (s, 9H), 0.85 (s, 9H), 0.89 (s, 9H), 1.76 (m, 1H), 1.84 (m, 1H), 2.70 (m, 1H), 3.36 (m, 1H), 3.70 (s, 3H), 4.26 (m, 1H), 4.58 (m, 1H), 5.07 (m, 2H), 5.91 (brs, 1H).

Provenance & Evidence