Sodium Iodide → N-[4-(4-amino-2-ethyl-2H-pyrazolo[3,4-c]quinolin-1-yl)butyl]methanesulfonamide

HRID 1984355

Reaction equation

[CH3:1][S:2]([NH2:5])(=[O:4])=[O:3].[H-].[Na+].Cl[CH2:9][CH2:10][CH2:11][CH2:12][C:13]1[N:14]([CH2:27][CH3:28])[N:15]=[C:16]2[C:25]=1[C:24]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[N:18]=[C:17]2[NH2:26].[I-].[Na+]>CN(C=O)C>[NH2:26][C:17]1[C:16]2=[N:15][N:14]([CH2:27][CH3:28])[C:13]([CH2:12][CH2:11][CH2:10][CH2:9][NH:5][S:2]([CH3:1])(=[O:4])=[O:3])=[C:25]2[C:24]2[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=2[N:18]=1

Participants

Conditions

Temperature: 90 °C

Procedure

Methanesulfonamide (1.14 g, 12.0 mmol) was added to a suspension of sodium hydride (60% dispersion in mineral oil, 480 mg, 12.0 mmol) in DMF (5 mL); the reaction was stirred for five minutes. 1-(4-Chlorobutyl)-2-ethyl-2H-pyrazolo[3,4-c]quinolin-4-amine (0.70 g, 2.4 mmol, prepared as described in Example 19) in DMF (2 mL) and sodium iodide (90 mg, 0.6 mmol) were sequentially added. The reaction was heated at 80° C. for one hour and 90° C. for three hours, allowed to cool to ambient temperature, and poured into ice water (70 mL). A precipitate was removed by filtration, and the filtrate was washed with diethyl ether. A precipitate formed in the aqueous layer over a period of 24 hours and was isolated by filtration and washed with water to provide 200 mg of N-[4-(4-amino-2-ethyl-2H-pyrazolo[3,4-c]quinolin-1-yl)butyl]methanesulfonamide as tan crystals, mp 192-194° C.

Workup

temperatureto cool to ambient temperature
customA precipitate was removed by filtration
washthe filtrate was washed with diethyl ether
customA precipitate formed in the aqueous layer over a period of 24 hours
customwas isolated by filtration
washwashed with water

Sources & evidence

ORD record: ord-119efbb4cffa47e4b938d1ea0bfa300e
Source dataset: uspto-grants-2009_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07544697B2

Linked notes

Loading…