Cycloaddition reactions of γ-amino α,β-didehydro amino acid esters: A test case for the principle of 1,3-allylic strain

Article abstract of DOI:10.1016/S0040-4039(00)92661-3

N,N-Dibenzylamino aldehydes, readily accessible from amino acids, can be converted into γ-N,N-dibenzylamino α,β-didehydro amino acid esters without racemization; these undergo stereoselective Diels-Alder reactions and 1,3-dipolar cycloaddition with diazom