Verfahren zur Behandlung von (2-Alkyl)acryloyl-isocyanat, Verfahren zur Stabilisation von (2-Alkyl)acryloyl-isocyanat, Verfahren zur Herstellung von (2-Alkyl)acryloyl-isocyanat und Verfahren zur Herstellung einer heterocyclischen Verbindung

摘要

A method for handling and stabilizing a (2-alkyl)acryloyl isocyanate represented by formula (1) is disclosed, which comprises the steps of: reacting an azomethine compound represented by formula (2) with the (2-alkyl)acryloyl isocyanate to obtain a reaction product and dissolving the reaction product into a solvent to regenerate the (2-alkyl)acryloyl isocyanate; wherein R<1> represents a hydrogen atom or a lower alkyl group, wherein R<2> represents an alkyl group, a cycloalkyl group, an aralkyl group, an alkenyl group, or an alkynyl group, and R<3> and R<4> each represents a hydrogen atom or a group which does not cause tautomerism with C=N in the formula, provided that at least one of R<3> and R<4> is not a hydrogen atom, and further a method for producing a (2-alkyl)acryloyl isocyanate is disclosed, which comprises the step of: preparing a heterocyclic compound represented by formula (3) and dissolving the heterocyclic compound into a solvent; wherein R<1> represents a hydrogen atom or a lower alkyl group, wherein R<5> represents a hydrogen atom or a lower alkyl group, R<6> represents an alkyl group, a cycloalkyl group, an aralkyl group, an alkenyl group, or an alkynyl group, and R<7> and R<8> each represents a hydrogen atom or a group in which a carbon atom located in the alpha -position to carbon atoms constituting a heterocyclic ring does not have a hydrogen atom, provided that at least one of R<7> and R<8> is not a hydrogen atom.