Rapid Access to Tricyclic Ring
System Containing Isoindolone by Novel Diastereoselective
Intramolecular Aldol-Type Cyclization of N-Substituted Phthalimides
Rapid Access to Tricyclic Ring
System Containing Isoindolone by Novel Diastereoselective
Intramolecular Aldol-Type Cyclization of N-Substituted Phthalimides
The cyclization of N-substituted phthalimide to 3-hydroxyisoindolone derivatives has been successfully carried out by the base-promoted aldol-type reaction. The new morpholine and thiomorpholine derivatives have been synthesized and characterized.
We investigated the reaction of alkylation of 2-phthalimidoethanol with ethylchloroacetate leading to ethyl(2-phthalimidoethoxy)acetate. The synthesis was successfully optimised by applying factorial design. Major side products have been separated, identified, and characterised. The yield level was increased from 25% to 52%, and a method of decreasing the amount of side products has been proposed