反应详情

Analogously to the procedure described in Example 1(a), from 35.0 g (0.2 mol) of N-(methoxycarbonylmethyl)-β-aminopropionic acid methyl ester, 33 ml (0.24 mol) of triethylamine and 36.2 g (0.24 mol) of malonic acid monomethyl ester chloride in 60 ml of methylene chloride there is obtained N-methoxycarbonylacetyl-N-methoxycarbonylmethyl-β-aminopropionic acid methyl ester in the form of a yellowish oil.