Tetrahedron p. 8075 - 8090 (1998)
Update date:2022-08-03
Topics:
Estieu, Karine
Ollivier, Jean
Salauen, Jacques
1-(1-Hydroxyalkyl)cyclobutanols 4a-f, readily available either from 1-hydroxycyclobutane carboxylic acid or from O-protected cyclobutanone cyanohydrin, appeared the most suitable precursors for a regioselective synthesis of cyclopentanones α,α- disubstituted with various similar or different alkyl, alkenyl, aryl or cycloalkyl groups. The key steps consist of acid or Grignard reagent induced C4→C5 ring expansions.
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