Electrosynthesis of β‐methylpentadecanedioic acid dimethyl ester

β‐Methylpentadecanedioic acid dimethyl ester ( I ) was synthesized electrochemically by Kolbe reaction using β‐methylglutaric acid monomethyl ester ( II ) and α,ω‐dodecanedioic acid monomethyl ester (III) as starting materials in MeOH solution. Electrolysis was carried out ofr about 4–5 h, when solution pH ≥ 7, followed by extraction with petroleum ether and distillation to obtain a colourless oily product ( I ) The minimum production cost occurred when the mole ration of II to III was 1:1·38 and unreacted III could be recovered. The product synthesized ( I ) completely met the requirement of artificially synthesized musk.