HCID 67831543, compound → HCID 67830872, compound

Participants

Reaction Steps

12.5 mg (35 μmol) of cis-N-benzYl-4-(dimethoxymethyl)azetidine-2-carboxylic acid benzyl ester in 10 ml of methanol is hydrogenated in a Parr shaker over 53 mg of 20% Pd(OH)2/C (containing 31% water) under 4 atm of hydrogen for 3 h. Filtration through a double paper filter, repeated washing with methanol and evaporation gives a crude product which is filtered over silica gel with isopropanol/water/conc. ammonia (17:2:1) to yield 3.0 mg (49%) of cis-4(dimethoxymethyl)azetidine-2-carboxylic acid as a colorless glass. 1H NMR (D2O): δ4.73 (d, 1H, overlapping), 4.72 (t, 1H, overlapping), 3.53 (s, 3H), 3.50 (s, 3H), 2.80 (dt, 1H, J=12 (d), 9.5(t)), 2.50 (dt, 1H, J=12(d), 8(t)).

Provenance & Evidence