Hydrochloric Acid → N-(1H-indol-1-yl)-N-propyl-9H-purin-6-amine

HRID 2051205Notes

Reaction equation

Cl[C:2]1[N:10]=[CH:9][N:8]=[C:7]2[C:3]=1[NH:4][CH:5]=[N:6]2.Cl.[N:12]1([NH:21][CH2:22][CH2:23][CH3:24])[C:20]2[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=2)[CH:14]=[CH:13]1.C([O-])([O-])=O.[Na+].[Na+]>CN1CCCC1=O.O>[N:12]1([N:21]([CH2:22][CH2:23][CH3:24])[C:2]2[N:10]=[CH:9][N:8]=[C:7]3[C:3]=2[N:4]=[CH:5][NH:6]3)[C:20]2[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=2)[CH:14]=[CH:13]1

Participants

Conditions

Temperature: 120 °C

Procedure

To a solution of 6-chloropurine (5.0 g, 0.032 mole) in 50 ml 1-methyl-2-pyrrolidinone, was added 1 ml ethereal-HCl; followed by a solution of N-(1H-indol-1-yl)-N-propylamine (5.2 g, 0.030 mole) in 50 ml 1-methyl-2-pyrrolidinone. After stirring at 120° C. for six hours, the mixture was cooled, poured into 500 ml water and stirred for five minutes, pH adjusted to 10 with Na2CO3 ; then extracted with ethyl acetate. The organic layer was washed with water, then dried (saturated NaCl, anhydrous MgSO4). After filtering, the solution was evaporated to an oil, about 8 g, which was eluted on a silica gel column with ethyl acetate via high pressure liquid chromatography. The desired fractions were combined, then evaporated to yield 2.2 g (25%) of N-(1H-indol-1-yl)-N-propyl-9H-purin-6-amine, m.p. 90°-5° C.

Workup

temperaturethe mixture was cooled
stirringstirred for five minutes
extractionthen extracted with ethyl acetate
washThe organic layer was washed with water
dry with materialdried (saturated NaCl, anhydrous MgSO4)
filtrationAfter filtering
customthe solution was evaporated to an oil, about 8 g, which
washwas eluted on a silica gel column with ethyl acetate via high pressure liquid chromatography
customevaporated

Sources & evidence

ORD record: ord-efd39a0ea94c4dac8ae30b7afb611a56
Source dataset: uspto-grants-1991_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05017578

Reaction notes

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