From (phenylsulfanyl)cycloalkanecarbaldehydes to optically active spirocyclic tetrahydrofurans: Stereospecific resolution of symmetric aldehydes through (S)-proline-catalysed aldol reaction

1. Secci, F.
2. Frongia, A.
3. Rubanu, M.G.
4. Sechi, M.L.
5. Sarais, G.
6. Arca, M.
7. Piras, P.P.