CHIRAL QUATERNARY CARBON COMPOUNDS. II. AN ASYMMETRIC SYNTHESIS OF (R) OR (S)-4,4-DIALKYL-2-CYCLOPENTENONES.

DOI: 10.1016/S0040-4039(00)94775-0

Source and publish data:

Tetrahedron Letters p. 2047 - 2050 (1985)

Update date:2022-08-04

Topics:

Authors:

Meyers, A. I.

Wanner, Klaus Th.

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Article abstract of DOI:10.1016/S0040-4039(00)94775-0

The chiral bicyclic lactam (5) derived from levulinic acid and (S)-valinol is sequentially alkylated and then cleaved to 2,2-dialkyl levulinaldehyde (8) which is cyclized to the title products (9) in > 99percent ee.

Full text of DOI:10.1016/S0040-4039(00)94775-0

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