Water → 1-(12-Tridecenyl)-3,7-dimethylxanthine

HRID 1954159Notes

Reaction equation

[NH:1]1[C:12](=[O:13])[C:11]2[N:9]([CH3:10])[CH:8]=[N:7][C:6]=2[N:4]([CH3:5])[C:2]1=[O:3].[Na].[CH2:15](Br)[CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH:26]=[CH2:27].O>CS(C)=O>[CH2:27]([N:1]1[C:12](=[O:13])[C:11]2[N:9]([CH3:10])[CH:8]=[N:7][C:6]=2[N:4]([CH3:5])[C:2]1=[O:3])[CH2:26][CH2:25][CH2:24][CH2:23][CH2:22][CH2:21][CH2:20][CH2:19][CH2:18][CH2:17][CH:16]=[CH2:15]

Participants

Conditions

Temperature: 60 °C

Procedure

To a suspension of sodium theobromine (2.22 g, 11.0 mmol) in dimethylsulfoxide (25 mL) was added 12-tridecenyl bromide and the reaction stirred for 16 hours at 60° C. The mixture was then poured into water (80 mL) and extracted with dichloromethane (3×50 mL). The combined organic portions were washed with water (3×100 mL), dried using magnesium sulfate, and evaporated to give a gummy residue. Purification by column chromatography using an ethyl acetate/hexane eluant yields 1.89 g (50% yield) 1-(12-Tridecenyl)-3,7-dimethylxanthine (inventive compound no. 2555) as a white solid.

Workup

extractionextracted with dichloromethane (3×50 mL)
washThe combined organic portions were washed with water (3×100 mL)
customdried
customevaporated
customto give a gummy residue
customPurification by column chromatography

Sources & evidence

ORD record: ord-34cef728a4eb4b1c9880d91e33f4753c
Source dataset: uspto-grants-2000_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06121270

Reaction notes

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