[O:1]=[C:2]1[N:9]2[CH:4]([CH2:5][CH2:6][O:7][C:8]2(C)C)[CH2:3]1.[OH:12][CH2:13]CC1NC(=O)C1.C(OC)(OC)OC>>[O:1]=[C:2]1[N:9]2[CH:4]([CH2:5][CH2:6][O:7][CH:8]2[O:12][CH3:13])[CH2:3]1Following the procedure described for the preparation of 8-oxo-2,2-dimethyl-3-oxa-1-azabicyclo[4.2.0]octane from 4-(2'-hydroxyethyl)-2-azetidinone and using trimethyl orthoformate instead of 2,2-dimethoxypropane one obtains 8-oxo-2-methoxy-3-oxa-1-azabicyclo[4.2.0]octane.
読み込み中…