Succinic anhydride → Diisopropylethylamine

Participants

Reaction Steps

In analogy to Example 70.4-6, from the methyl (RS)-(3-amino-4-methoxy-phenyl)-(4-cyano-phenylamino)-acetate described in Example 70.3, succinic anhydride and Hünig's base there was obtained (RS)-N-{5-[(4-cyano-phenylamino)-methoxycarbonyl-methyl]-2-methoxy-phenyl}-succinamidic acid, which was subsequently converted via (RS)-N-{5-[carboxy-(4-cyano-phenylamino)-methyl]-2-methoxy-phenyl}-succinamidic acid into (RS)-(E)- and/or -(Z)-N-(5-{carboxy-[4-(N-hydroxycarbamimidoyl)-phenylamino]-methyl}-2-methoxyphenyl)-succinamidic acid.

Provenance & Evidence