111099-08-2Relevant articles and documents
ALDOLISATION STEREOCONTROLEE PAR UN GROUPE TERMOLABILE. SYNTHESE STEREOSELECTIVE DE COMPOSES POSSEDANT TROIS CARBONES ASYMMETRIQUES CONSECUTIFS.
Bloch, R.,Gilbert, L.
, p. 2523 - 2540 (2007/10/02)
The bulkiness of thermolabile norbornenyl and oxanorbornenyl groups has been used to induce good to excellent syn diastereoselective aldol condensations between Diels-Alder adducts of α,β-ethylenic ketones and various aldehydes.The aldols thus obtained gi
STEREOSELECTIVE ALDOL CONDENSATIONS INDUCED BY A THERMOLABILE GROUP.
Bloch, R.,Gilbert, L.
, p. 3511 - 3514 (2007/10/02)
Diastereoselective aldol condensations between exo, endo and 2-methyl endo bicyclo-5-hepten-2-yl ethyl ketones and aldehydes are achieved via the ketones Z-lithium enolates prepared with lithium hexamethyldisilazide.The aldols thus obtained give rise by a retro Diels-Alder reaction to syn α-methyl-β-siloxy-α'-ethylenic ketones of potential value for polyhydroxylated natural product synthesis.