Process for producing δ-aminopentadienoate compound

A process for producing a δ-aminopentadienoate compound represented by the following formula (I), the process comprising reacting a δ-aminopentadienoate compound represented by the following formula (II) with an alcohol represented by the following formula (III):

• wherein in formulae (I) to (III), R11 and R21 each independently represent an aliphatic group, an aromatic group, or a heterocyclic group bonded via a carbon atom;
• R12, R13, R14, R15 and R16each independently represent a hydrogen atom, an aliphatic group, an aromatic group, or a heterocyclic group bonded via a carbon atom;
• Y11 represents an electron-withdrawing group whose Hammett's substituent constant σp value is a positive numerical value;
• R12 and R13 may be bonded to each other to form a ring;
• R13 and R15 may be bonded to each other to form a ring;
• R15 and Y11 may be bonded to each other to form a ring;
• Y11 and R11 may be bonded to each other to form a ring;
• Y11and R21 may be bonded to each other to form a ring;
• R11 and R14 may be bonded to each other to form a ring;
• R21 and R14 may be bonded to each other to form a ring;
• R14and R16 may be bonded to each other to form a ring;
• R16 and R12 may be bonded to each other to form a ring;
• and R11 and R21 are not the same group.