Thionyl Chloride → Methyl 4-[(7-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-2,3-dihydro-4H-1,4-benzoxazin-4-yl)methyl]benzoate

HRID 43592Notes

Reaction equation

HRID 43592 reaction equation
[Cl:1][C:2]1[N:3]=[C:4]([C:9]([OH:11])=O)[NH:5][C:6]=1[CH2:7][CH3:8].S(Cl)(Cl)=O.[NH2:16][C:17]1[CH:37]=[CH:36][C:20]2[N:21]([CH2:25][C:26]3[CH:35]=[CH:34][C:29]([C:30]([O:32][CH3:33])=[O:31])=[CH:28][CH:27]=3)[CH2:22][CH2:23][O:24][C:19]=2[CH:18]=1>N1C=CC=CC=1>[Cl:1][C:2]1[N:3]=[C:4]([C:9]([NH:16][C:17]2[CH:37]=[CH:36][C:20]3[N:21]([CH2:25][C:26]4[CH:35]=[CH:34][C:29]([C:30]([O:32][CH3:33])=[O:31])=[CH:28][CH:27]=4)[CH2:22][CH2:23][O:24][C:19]=3[CH:18]=2)=[O:11])[NH:5][C:6]=1[CH2:7][CH3:8]

Participants

5

Reactant 3

HCID 24386Thionyl ChlorideHCID 28320862Methyl 4-[(7-amino-2,3-dihydro-4H-1,4-benzoxazin-4-yl)methyl]benzoateHCID 675489294-chloro-5-ethyl-1H-imidazole-2-carboxylic acid

Product 1

HCID 67548473Methyl 4-[(7-{[(4-chloro-5-ethyl-1H-imidazol-2-yl)carbonyl]amino}-2,3-dihydro-4H-1,4-benzoxazin-4-yl)methyl]benzoateYield 70.3%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

The same operation as in Example (91c) was performed using 4-chloro-5-ethyl-1H-imidazole-2-carboxylic acid (0.21 g, 1.2 mmol), thionyl chloride (2 mL), methyl 4-[(7-amino-2,3-dihydro-4H-1,4-benzoxazin-4-yl)methyl]benzoate obtained in Example (101b) (0.28 g, 0.97 mmol) and pyridine (5 mL). The resulting solid was washed with dichloromethane/hexane=1/1 to obtain 0.31 g of the title compound as a light yellow solid (70%).

Workup

  1. washThe resulting solid was washed with dichloromethane/hexane=1/1

Sources & evidence

ORD record
ord-3cbb7f3a141945568e200a49882094ab
Source dataset
uspto-grants-2013_09
Patent number
US08536197B2

Reaction notes

Loading…