Morpholine → (+)-N-(7-[1,4]dioxan-2-yl-4-methoxy-benzothiazol-2-yl)-2-morpholin-4-yl-isonicotinamide

HRID 985806Notes

Reaction equation

HRID 985806 reaction equation
Br[C:2]1[CH:3]=[C:4]([CH:25]=[CH:26][N:27]=1)[C:5]([NH:7][C:8]1[S:9][C:10]2[C:16]([CH:17]3[CH2:22][O:21][CH2:20][CH2:19][O:18]3)=[CH:15][CH:14]=[C:13]([O:23][CH3:24])[C:11]=2[N:12]=1)=[O:6].C(=O)([O-])[O-].[Cs+].[Cs+].C(C1C(O)=C(C(C)(C)C)C=C(C)C=1)(C)(C)C.[NH:50]1[CH2:55][CH2:54][O:53][CH2:52][CH2:51]1>>[O:18]1[CH2:19][CH2:20][O:21][CH2:22][CH:17]1[C:16]1[C:10]2[S:9][C:8]([NH:7][C:5](=[O:6])[C:4]3[CH:25]=[CH:26][N:27]=[C:2]([N:50]4[CH2:55][CH2:54][O:53][CH2:52][CH2:51]4)[CH:3]=3)=[N:12][C:11]=2[C:13]([O:23][CH3:24])=[CH:14][CH:15]=1

Participants

5

Reactant 4

HCID 8083MorpholineHCID 10796Cesium carbonateHCID 314042,6-Di-tert-butyl-4-methylphenolHCID 22507693(+)-2-bromo-N-(7-[1,4]dioxan-2-yl-4-methoxy-benzothiazol-2-yl)-isonicotinamide

Product 1

HCID 11419702(+)-N-(7-[1,4]dioxan-2-yl-4-methoxy-benzothiazol-2-yl)-2-morpholin-4-yl-isonicotinamideYield 35%

Conditions

Temperature
100 °C

Procedure

A stirred suspension of 100 mg (0.22 mmol) (+)-2-bromo-N-(7-[1,4]dioxan-2-yl-4-methoxy-benzothiazol-2-yl)-isonicotinamide, 145 mg (0.44 mmol) cesium carbonate and a few crystals of 2,6-di-tert-butyl-p-cresol in 0.39 ml (4.44 mmol) morpholine in a thick-walled glass pressure tube fitted with a teflon cap was heated at 100° C. for 16 h. The reaction mixture was then cooled to room temperature and concentrated in vacuo. Flash chromatography (1/1 acetone/hexane) followed by trituration in ether afforded 35 mg (35%) (+)-N-(7-[1,4]dioxan-2-yl-4-methoxy-benzothiazol-2-yl)-2-morpholin-4-yl-isonicotinamide as a white solid. [α]D20=+63.7° (c=0.63, CHCl3), ES-MS m/e (%): 457 (M+H+, 100).

Workup

  1. customcap
  2. temperatureThe reaction mixture was then cooled to room temperature
  3. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-91d18525441343988575c2c38e6504df
Source dataset
uspto-grants-2005_03
Patent number
US06872833B2

Reaction notes

Loading…