N-alkylation of nor-compounds: ethyl acrylate, triethylamine, ethanol, refl. 3 h.
Transition-metal-catalyzed CÀH bond functionalizations.
Cyclopropylmethylation of Alcohol
UV spectra of photoswitchable acids 1, 4, 6, 7, and 8 in ethanol in the CH form, before (black curve) and after irradiation, (red curve, formation of the NH form).
Optically pure alcohol 1 was reacted with propionic anhydride and either 5 mol % of S-HBTM or 5 mol % of R-HBTM catalyst.