N-Hydroxyphthalimide → HCID 22408674, compound

Participants

Reaction Steps

Analogously to Example 1 b, but using ethyl acetate/hexane mixtures (1:3 and 1:1) in the flash chromatography, starting from 15.24 g (0.0757 mol) of 3-(N-BOC-aminomethyl)-cyclobutanol, 12.35 g (0.0757 mol) of N-hydroxyphthalimide, 19.85 g (0.0757 mol) of triphenylphosphine and 13.3 ml (0.0795 mol) of diethyl azodicarboxylate (93%), the title compound, which melts at 161°-162° C. after recrystallization from ethyl acetate, is obtained. Evaporation of the mother liquor and recrystallization of the residue from ethyl acetate/hexane gives a further batch of the title compound, m.p. 145°-150° C.

Provenance & Evidence