Cesium carbonate → 4-{4-methoxy-2-[(2-morpholin-4-yl-pyridine-4-carbonyl)-amino]-benzothiazol-7-yl}-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester

HRID 1582132Notes

Reaction equation

HRID 1582132 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH:12]=[C:11]([C:14]2[C:22]3[S:21][C:20]([NH:23][C:24]([C:26]4[CH:31]=[CH:30][N:29]=[C:28](Cl)[CH:27]=4)=[O:25])=[N:19][C:18]=3[C:17]([O:33][CH3:34])=[CH:16][CH:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:35](=[O:38])([O-])[O-].[Cs+].[Cs+]>N1CCOCC1>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH:12]=[C:11]([C:14]2[C:22]3[S:21][C:20]([NH:23][C:24]([C:26]4[CH:31]=[CH:30][N:29]=[C:28]([N:8]5[CH2:6][CH2:35][O:38][CH2:10][CH2:9]5)[CH:27]=4)=[O:25])=[N:19][C:18]=3[C:17]([O:33][CH3:34])=[CH:16][CH:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

4

Reactant 2

HCID 10796Cesium carbonateHCID 865888414-{2-[(2-chloro-pyridine-4-carbonyl)-amino]-4-methoxy-benzothiazol-7-yl}-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester

Product 1

HCID 865888424-{4-methoxy-2-[(2-morpholin-4-yl-pyridine-4-carbonyl)-amino]-benzothiazol-7-yl}-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl esterYield 90.6%

Reagents, catalysts & solvents 1

HCID 8083MorpholineSolvent

Procedure

0.30 g (0.60 mMol) 4-{2-[(2-chloro-pyridine-4-carbonyl)-amino]-4-methoxy-benzothiazol-7-yl}-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester were heated to 130° C. for 24 h in 1 ml morpholine and 0.39 g (1.2 mMol) cesium carbonate. The morpholin has been removed in vacuo. The residue has been triturated in ethyl acetate and subsequently subjected to column chromatography (ethyl acetate) to yield 0.15 g (45%) 4-{4-methoxy-2-[(2-morpholin-4-yl-pyridine-4-carbonyl)-amino]-benzothiazol-7-yl}-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester as a yellow foam. ES-MS m/e (%): 552 ([M+H]−, 100).

Workup

  1. customThe morpholin has been removed in vacuo
  2. customThe residue has been triturated in ethyl acetate

Sources & evidence

ORD record
ord-5fd7b40349d9459ea5e849c1b2346972
Source dataset
uspto-grants-2004_05
Patent number
US06734179B2

Reaction notes

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