Sodium Hydroxide → 4-(2,4-Dichloro-5-methoxyphenylamino)-7-methoxy-8-(2-[1,2,3]triazol-2-yl ethoxy)benzo[g]quinoline-3-carbonitrile

HRID 989384

Reaction equation

Cl[CH2:2][CH2:3][O:4][C:5]1[C:31]([O:32][CH3:33])=[CH:30][C:8]2[CH:9]=[C:10]3[C:15](=[CH:16][C:7]=2[CH:6]=1)[N:14]=[CH:13][C:12]([C:17]#[N:18])=[C:11]3[NH:19][C:20]1[CH:25]=[C:24]([O:26][CH3:27])[C:23]([Cl:28])=[CH:22][C:21]=1[Cl:29].[NH:34]1[CH:38]=[CH:37][N:36]=[N:35]1.[OH-].[Na+]>CN(C)C=O>[Cl:29][C:21]1[CH:22]=[C:23]([Cl:28])[C:24]([O:26][CH3:27])=[CH:25][C:20]=1[NH:19][C:11]1[C:10]2[C:15](=[CH:16][C:7]3[CH:6]=[C:5]([O:4][CH2:3][CH2:2][N:35]4[N:36]=[CH:37][CH:38]=[N:34]4)[C:31]([O:32][CH3:33])=[CH:30][C:8]=3[CH:9]=2)[N:14]=[CH:13][C:12]=1[C:17]#[N:18]

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 0.31 g (0.62 mmol) of 8-(2-chloroethoxy)-4-(2,4-dichloro-5-methoxyphenylamino)-7-methoxybenzo[g]quinoline-3-carbonitrile, 0.36 mL (6.1 mmol) of 1H-1,2,3-triazole and 0.11 g (2.8 mmol) of sodium hydroxide powder in 5 mL of N,N-dimethyl formamide is heated at 80° C. for 4.5 hours, then cooled and poured on to ice. The solid is collected by filtration, washed with water and dried. The two isomers are separated by silica gel flash chromatography, using first 7:3 ethyl acetate/hexane, then a 100:0 to 9:1 gradient of ethyl acetate/methanol. The less polar material, 0.071 g of 4-(2,4-dichloro-5-methoxyphenylamino)-7-methoxy-8-(2-[1,2,3]triazol-2-yl-ethoxy)benzo[g]quinoline-3-carbonitrile, is obtained as yellow solid, mp 285-287° C.

Workup

temperaturecooled
additionpoured on to ice
filtrationThe solid is collected by filtration
washwashed with water
customdried
customThe two isomers are separated by silica gel flash chromatography

Sources & evidence

ORD record: ord-077719d9d7764c5f9933c66d1f1cdf08
Source dataset: uspto-grants-2003_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06638929B2

Linked notes

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