[CH3:1][O:2][C:3]([C:5]1[C:6]([O:13][CH3:14])=[N:7][C:8](Cl)=[CH:9][C:10]=1[CH3:11])=[O:4].[NH:15]1[CH2:20][CH2:19][O:18][CH2:17][CH2:16]1.CCN(CC)CC.CCOC(C)=O>CN1C(=O)CCC1>[CH3:1][O:2][C:3]([C:5]1[C:6]([O:13][CH3:14])=[N:7][C:8]([N:15]2[CH2:20][CH2:19][O:18][CH2:17][CH2:16]2)=[CH:9][C:10]=1[CH3:11])=[O:4]A solution of 5.0 g (21.8 mmol) 6-chloro-2-methoxy-4-methylpyridine-3-carboxylic acid methylester, 2.0 g (24.0 mmol) morpholine and 6.0 ml (43.5 mmol) NEt3 in NMP (21 ml) was heated at 90° C. for 2 d. After cooling to RT the mixture was partiotionated between EtOAc and a 1M aq. NaHCO3 sol. The organic layer was separated, dried over MgSO4 and concentrated in vacuo. Purification of the residue by CC (hexane/EtOAc 4:1) provided 2.7 g (9.8 mmol, 45%) 2-methoxy-4-methyl-6-morpholino-pyridine-3-carboxylic acid methylester.
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