[C:1]([O:6]C)(=O)[C@@H:2]([CH3:4])[OH:3].[NH:8]1[CH2:13][CH2:12][O:11][CH2:10][CH2:9]1.C[O-].[Na+].CO>>[N:8]1([C:1](=[O:6])[C@H:2]([OH:3])[CH3:4])[CH2:13][CH2:12][O:11][CH2:10][CH2:9]1To (R)-methyl lactate (24.42 g, 0.23 mol) were added morphline (21.46 g, 0.25 mol) and sodium methoxide in methanol (14%, 9.04 g, 0.02 mol) and the mixture was stirred for 3 hours at 50° C. After removal of the solvent in vacuo, the residue was subjected to azeotropic distillation three times with toluene to give the subject compound (quant.).
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