A 2+3 condensation of a wide assortment of Schiff bases, prepared
from aromatic aldehydes and primary amines, with methyl 2-(1-ethoxyethylideneamino)acetate
allows convenient access to an extensive family of substituted 4-arylideneimidazolin-5-one
analogues of the green fluorescent protein (GFP) chromophore.
4-arylideneimidazolin-5-one - azomethine ylide - Schiff bases - heterocycle - 2+3
cycloaddition