N,N-Dimethylethylenediamine → 2-[2-(N-tert-butoxycarbonylamino)ethyl]-5-[[2-(dimethylamino)ethyl]amino]isoquino[8,7,6-cd]indazole-6(2H)-one

HRID 1451487Notes

Reaction equation

[C:1]([O:5][C:6]([NH:8][CH2:9][CH2:10][N:11]1[C:19]2[CH:18]=[CH:17][C:16](OS(C3C=CC(C)=CC=3)(=O)=O)=[C:15]3[C:31](=[O:38])[C:32]4[CH:33]=[CH:34][N:35]=[CH:36][C:37]=4[C:13]([C:14]=23)=[N:12]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:39][N:40]([CH3:44])[CH2:41][CH2:42][NH2:43]>N1C=CC=CC=1>[C:1]([O:5][C:6]([NH:8][CH2:9][CH2:10][N:11]1[C:19]2[CH:18]=[CH:17][C:16]([NH:43][CH2:42][CH2:41][N:40]([CH3:44])[CH3:39])=[C:15]3[C:31](=[O:38])[C:32]4[CH:33]=[CH:34][N:35]=[CH:36][C:37]=4[C:13]([C:14]=23)=[N:12]1)=[O:7])([CH3:3])([CH3:4])[CH3:2]

Participants

Conditions

Temperature: 80 °C

Procedure

A suspension of 2-[2-(N-tert-butoxycarbonylamino)ethyl]-5-(p-toluenesulfonyloxy) isoquino[8,7,6-cd]indazole-6(2H)-one (0.056 g) and 2-(dimethylamino)ethylamine (0.080 mL) in dry pyridine (0.50 mL) is heated at 80° C. The dark solution obtained is held at this temperature for 1 hour, then it is left at room temperature overnight. The dark precipitate obtained is separated by suction and purified by column chromatography (SiO2 ; eluant ethyl acetate and then methylene chloride/methanol 9/0.5 v/v) to give 2-[2-(N-tert-butoxycarbonylamino)ethyl]-5-[[2-(dimethylamino)ethyl]amino]isoquino[8,7,6-cd]indazole-6(2H)-one (0.024 g) as a red-orange solid.

Workup

customThe dark solution obtained
waitit is left at room temperature overnight
customThe dark precipitate obtained
customis separated by suction
custompurified by column chromatography (SiO2

Sources & evidence

ORD record: ord-8780df86376645f2bc4d6707933be52d
Source dataset: uspto-grants-1997_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05604246

Reaction notes

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