Acylation of amino acid Schiff bases

LJ Heuser, CF Anderson, HE Applegate…

Index: Heuser,L.J. et al. Journal of Organic Chemistry, 1974 , vol. 39, # 26 p. 3929 - 3932

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Abstract

A mixture of 21a (0.5 g, 0.0017 mol) and 2a (0.5 g, 0.004 mol) was heated at 100'for 3 hr. Then the resulting mixture was chilled by ether, and filteration gave 0.6 g (86%) of loa. Reaction of Ethylphthalaldehydate (23) with 4a. A mixture of 23 (5.34 g, 0.03 mol) and 4a (2.8 g, 0.03 mol) in benzene (50 ml) was refluxed for 6 hr using a Dean-Stark trap. After removal of solvent, the residue was distilled under reduced pressure to afford 6.30 g (83% ...