2-(Ethylamino)ethanol → 4-Ethoxy-N-ethyl-N-(2-hydroxy-ethyl)-3-(5-ethyl-4-oxo-7-propyl-3,4-dihydroimidazo[5,1-f][1,2,4]triazin-2-yl)benzenesulphonamide

HRID 641224Notes

Reaction equation

[CH2:1]([O:3][C:4]1[CH:9]=[CH:8][C:7]([S:10](Cl)(=[O:12])=[O:11])=[CH:6][C:5]=1[C:14]1[NH:19][C:18](=[O:20])[C:17]2=[C:21]([CH2:27][CH3:28])[N:22]=[C:23]([CH2:24][CH2:25][CH3:26])[N:16]2[N:15]=1)[CH3:2].CN(C1C=CC=CN=1)C.[CH2:38]([NH:40][CH2:41][CH2:42][OH:43])[CH3:39]>ClCCl>[CH2:1]([O:3][C:4]1[CH:9]=[CH:8][C:7]([S:10]([N:40]([CH2:38][CH3:39])[CH2:41][CH2:42][OH:43])(=[O:12])=[O:11])=[CH:6][C:5]=1[C:14]1[NH:19][C:18](=[O:20])[C:17]2=[C:21]([CH2:27][CH3:28])[N:22]=[C:23]([CH2:24][CH2:25][CH3:26])[N:16]2[N:15]=1)[CH3:2]

Participants

Conditions

Temperature: 0 °C

Procedure

0.64 g (1.5 mmol) of 4-ethoxy-3-(5-ethyl-4-oxo-7-propyl-3,4-dihydro-imidazo[5,1-f][1,2,4]triazin-2-yl)-benzenesulphonyl chloride are dissolved in 20 ml of dichloromethane and cooled to 0° C. After addition of a spatula tip of dimethylaminopyridine, 0.40 g (4.50 mmol) of 2-(ethylamino)-ethanol are added, and the reaction mixture is stirred at room temperature overnight. The mixture is diluted with dichloromethane, the organic phase is washed with water and dried over sodium sulphate and the solvent is removed under reduced pressure. Chromatography (dichloromethane/methanol=95:5) gives 0.454 g (63%) of a colourless solid.

Workup

additionare added
washthe organic phase is washed with water
dry with materialdried over sodium sulphate
customthe solvent is removed under reduced pressure

Sources & evidence

ORD record: ord-374569bc54134a68b3e251139cab7613
Source dataset: uspto-grants-2010_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07696206B2

Reaction notes

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