Dimethyl Sulfoxide → 1-[2-[[3-(1,6-dihydro-6-oxo-9H-purin-9-yl)-1-oxopropyl]hydrazino]2-oxoethyl]pyridinium chloride

HRID 1534962Notes

Reaction equation

[O:1]=[C:2]1[NH:10][CH:9]=[N:8][C:7]2[N:6]([CH2:11][CH2:12][C:13]([O:15]C3C=CC([N+]([O-])=O)=CC=3)=O)[CH:5]=[N:4][C:3]1=2.[CH:25]1[CH:30]=[CH:29][N+:28]([CH2:31][C:32]([NH:34][NH2:35])=[O:33])=[CH:27][CH:26]=1.[Cl-:36].CS(C)=O>C(#N)C>[Cl-:36].[O:1]=[C:2]1[NH:10][CH:9]=[N:8][C:7]2[N:6]([CH2:11][CH2:12][C:13]([NH:35][NH:34][C:32](=[O:33])[CH2:31][N+:28]3[CH:27]=[CH:26][CH:25]=[CH:30][CH:29]=3)=[O:15])[CH:5]=[N:4][C:3]1=2

Participants

Conditions

Temperature: 70 °C

Procedure

0.300 g (0.9111 mmol) of 3-(1,6-dihydro-6-oxo-9H-purin-9-yl)propanoic acid, 4-nitrophenyl ester (AIT-0081) and 0.172 g (0.9166 mmol) of Girard's reagent P were placed into a 10 ml round bottom flask with 2 ml dimethylsulfoxide and a magnetic stirring bar. The solution was heated to 70° C. with stirring. As the solution began to warm up, the solids began to dissolve and the solution became progressively green in color. After about 30 minutes, the solution was completely homogeneous. The solution was allowed to react at 70° C. for four hours and was allowed to cool to room temperature. 10 ml acetonitrile was added and a white precipitate formed immediately. The solution was filtered and washed with acetonitrile and ether. The solid was allowed to dry but it absorbed H2O from the atmosphere. The hygroscopic effect could either be due to residual dimethylsulfoxide or the product itself.

Workup

temperatureto warm up
dissolutionto dissolve
customto react at 70° C. for four hours
temperatureto cool to room temperature
customa white precipitate formed immediately
filtrationThe solution was filtered
washwashed with acetonitrile and ether
customto dry
customit absorbed H2O from the atmosphere

Sources & evidence

ORD record: ord-701d6b56668c4f0cbdcfe0dd396b74e2
Source dataset: uspto-grants-1992_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05091432

Reaction notes

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