Tetrahedron p. 7553 - 7564 (1989)
Update date:2022-08-04
Topics:
Zonjee, Johannes N.
Koning, Henk de
Speckamp, W. Nico
1-(2-(Benzyloxymethyl)-3-butenyl)-5-ethoxy-2-pyrrolidinones 12 cyclize upon formic acid treatment to indolizinones.The effect of some substituents α to the iminium carbon atom on the diastereoselectivity of the cyclization is discussed.
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