Ethylparaben → 4-(3-methylbut-2-enoxy)benzoic acid

Participants

Reaction Steps

The reaction of ethyl 4-hydroxybenzoate and 3,3-dimethylallyl bromide in 2-butanone in the presence of potassium carbonate was performed as described in Example 2 to give 4-(3-Methyl-but-2-enyloxy)-benzoic acid as white powder. 1H-NMR (400 MHz, d6-DMSO): 12.54 (s, —CO2H); 7.81 (d-like, 2 arom.H); 6.95 (d-like, 2 arom.H); 5.38 (m, CH═C(CH3)2); 4.54 (d-like, CH2CH═C(CH3)2); 1.69, 1.64 (2s, CH═C(CH3)2). 13C-NMR (100 MHz, d6-DMSO): 166.96 (C═O); 162.05; 137.66; 131.25 (2 arom. C); 122.78; 119.38; 114.36 (2 arom.C); 64.58; 25.37; 17.99.

Provenance & Evidence