1-Octanol → 2(Octyloxy)methylbromobenzene

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Reaction Steps

Lithium octanoate, prepared from octanol and n-butyllithium, in a mixture of tetrahydrofuran/hexane dimethyl formamide was condensed with 2-bromobenzyl bromide to yield 2(octyloxy)methylbromobenzene. This material was treated with n-butyllithium in ether/hexane mixture and subsequently treated with paraformaldehyde to yield 2-(octyloxy)methylbenzyl alcohol. This material was then treated with triphenyl phosphonine bromide to yield [[2-[(octyloxy)-methyl]phenyl]methyl]triphenyl phosphonium bromide. Condensation of this material with 7-formyl-3-methyl-2,4,6-octatrienoic acid ethyl ester, as in Example 3, followed by hydrolysis, as in Example 5, gave the (All-E)-3,7-Dimethyl-9-[2-[(octyloxy)-methyl]phenyl]-2,4,6,8-nonatetraenoic acid, mp 120-121° (from dichloro methane/hexane mixture.

Provenance & Evidence