Allene undergoes alkoxy–alkoxycarbonylation under exceedingly mild conditions (CO–O2–MeOH–PdCl2–CuCl2, 0 °C, 1 atm) affording methyl 2-methoxymethylacrylate in good yield; in the case of 1,1-disubstituted allenes the reaction is regiospecific although the product yields are lower.
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Alper et al. (1984) studied this question.