2-Aminopyridine → 6-(3-Methylimidazo[1,2-a]pyridin-2-yl)-2-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine

HRID 1731340Notes

Reaction equation

Br[CH:2]([CH3:17])[C:3]([C:5]1[CH:6]=[CH:7][C:8]2[O:13][CH:12]([CH3:14])[C:11](=[O:15])[NH:10][C:9]=2[CH:16]=1)=O.[NH2:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][N:20]=1>>[CH3:17][C:2]1[N:20]2[CH:21]=[CH:22][CH:23]=[CH:24][C:19]2=[N:18][C:3]=1[C:5]1[CH:6]=[CH:7][C:8]2[O:13][CH:12]([CH3:14])[C:11](=[O:15])[NH:10][C:9]=2[CH:16]=1

Participants

Reactant 2

HCID 104392-Aminopyridine

HCID 202286766-(2-Bromopropanoyl)-2-methyl-2H-1,4-benzoxazin-3(4H)-one

Product 1

HCID 202286916-(3-Methylimidazo[1,2-a]pyridin-2-yl)-2-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazineYield 48.5%

Procedure

6-(3-Methylimidazo[1,2-a]pyridin-2-yl)-2-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine (1.05 g) was prepared in substantially the same manner as that of Example 16 from 6-(2-bromopropionyl)-2-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine (2.2 g) and 2-aminopyridine (2.1 g).

Sources & evidence

ORD record: ord-866908ef172f43acbb5d7abc10fd9aef
Source dataset: uspto-grants-1986_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04621084

Reaction notes

Loading…