Tetrahedron Letters p. 5653 - 5656 (1990)
Update date:2022-08-03
Topics:
Moss, William O.
Bradbury, Roben H.
Hales, Neil J.
Gallagher, Timothy
Deprotonation of the N-protected aminoketene-S,S-acetal (6) and reaction of allylic anion (7) with electrophiles leads to adducts (8) which have been converted to 3-substituted prolines (11). Conformationally constrained variants (11d) and (11e) of aspartic and glutamic acid have been prepared.
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