3-Carbomethoxy-4-(3-methoxyphenyl)-3-butenoic acid → 3-Carbomethoxy-4-(3-methoxyphenyl)butanoic acid

Beteiligte Stoffe

Reaktionsschritte

A solution of 21.1 g (84 mmol) of 3-carbomethoxy-4-(3-methoxyphenyl)-3-butenoic acid in 100 ml of acetic acid with 2.11 g of 10% Pd on carbon is shaken under H2 atmosphere until H2 uptake ceases (approximately 4 hours). This is filtered through celite and the filtrate concentrated in vacuo several times from toluene to afford 17.6 g of 3-carbomethoxy-4-(3-methoxyphenyl)butanoic acid in the form of a yellow oil which is used directly in the next step.

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