Sulfuric acid magnesium salt (1:1) → HCID 12788559, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 1.05 g. (31.4 mmole) of methyl 2E,4E,6Z,8E-3,7-dimethyl-6-fluoro-9-(2,4,5-trimethyl-3-thienyl)-2,4,6,8-nonatetraenoate in 100 ml. of methylene chloride was cooled to -60° C. under argon and 5.2 ml (69 mmole) of diisobutylaluminium hydride were added dropwise thereto. The temperature was raised to -10° C. for 10 minutes and 4 ml. of a saturated solution of magnesium sulfate were added thereto. This mixture was stirred at 25° C. for 2 hours, filtered through celite and evaporated to give a light yellow solid which was crystallized from hexane-ether (4:1 parts by volume) to give 700 mg. (73% yield) of 2E,4E,6Z,8E-3,7-dimethyl-6-fluoro-9-(2,4,5-trimethyl-3-thienyl)-2,4,6,8-nonatetraen-1-ol, m.p. 106°-107.5° C.

Provenance & Evidence