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Water → 1-(3-(S)-methyl-7-methyloct-6-enyl)-3,7-dimethylxanthine

HRID 361500
Notes
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Reaction equation

HRID 361500 reaction equation
[H-].[Na+].[NH:3]1[C:14](=[O:15])[C:13]2[N:11]([CH3:12])[CH:10]=[N:9][C:8]=2[N:6]([CH3:7])[C:4]1=[O:5].[CH2:16](Br)[CH2:17][C@H:18]([CH2:20][CH2:21][CH:22]=[C:23]([CH3:25])[CH3:24])[CH3:19].O>CS(C)=O>[CH3:19][C@@H:18]([CH2:20][CH2:21][CH:22]=[C:23]([CH3:25])[CH3:24])[CH2:17][CH2:16][N:3]1[C:14](=[O:15])[C:13]2[N:11]([CH3:12])[CH:10]=[N:9][C:8]=2[N:6]([CH3:7])[C:4]1=[O:5]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 5429TheobromineHCID 24758Sodium hydrideHCID 10900106(S)-(+)-Citronellyl bromide

Product 1

HCID 228614851-(3-(S)-methyl-7-methyloct-6-enyl)-3,7-dimethylxanthineYield 80%

Reagents, catalysts & solvents 1

HCID 679
Dimethyl Sulfoxide
Solvent

Procedure

This example illustrates a synthesis of 1-(3-(S)-methyl-7-methyl-6,7-oxidooctyl)-3,7-dimethylxanthine (inventive compound no. 1588S). Sodium hydride (95%) (631 mg, 25 mmol) was added to a solution of theobromine (4.14 g, 23 mmol) in dimethylsulfoxide (75 mL). After 20 minutes of stirring, (S)(-)Citronellyl bromide (5.0 g, 22.8 mmol) was added. After 16 hours of stirring at room temperature, the reaction mixture was poured into a separatory funnel containing 500 mL water and extracted with dichloromethane (3×100 mL). The organic portions were combined, washed with water (100 mL) and brine (100 mL), dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The crude product obtained was further purified by flash chromatography over silica gel using 30% petroleum ether/ethyl acetate eluant to yield 5.7 g (80% yield) 1-(3-(S)-methyl-7-methyloct-6-enyl)-3,7-dimethylxanthine (inventive compound no. 1596S) as an yellow oil.

Workup

  1. stirringAfter 16 hours of stirring at room temperature
  2. additionthe reaction mixture was poured into a separatory funnel
  3. extractionextracted with dichloromethane (3×100 mL)
  4. washwashed with water (100 mL) and brine (100 mL)
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe crude product obtained
  8. customwas further purified by flash chromatography over silica gel using 30% petroleum ether/ethyl acetate eluant

Sources & evidence

ORD record
ord-d17be5c97b68420fa3aa4b851f2f06de
Source dataset
uspto-grants-1999_02
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05866576

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes