Dimethylformamide → 9-(2-Acetoxyethoxymethyl)guanine

HRID 848102Notes

Reaction equation

HRID 848102 reaction equation
[OH:1][CH2:2][CH2:3][O:4][CH2:5][N:6]1[CH:14]=[N:13][C:12]2[C:11](=[O:15])[NH:10][C:9]([NH2:16])=[N:8][C:7]1=2.CN(C)C=O.[C:22](OC(=O)C)(=[O:24])[CH3:23]>N1C=CC=CC=1>[C:22]([O:1][CH2:2][CH2:3][O:4][CH2:5][N:6]1[CH:14]=[N:13][C:12]2[C:11](=[O:15])[NH:10][C:9]([NH2:16])=[N:8][C:7]1=2)(=[O:24])[CH3:23]

Participants

5

Reactant 3

HCID 6228DimethylformamideHCID 7918Acetic AnhydrideHCID 135398513Acyclovir

Product 1

HCID 1354469309-(2-Acetoxyethoxymethyl)guanine

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

A mixture of 9-(2-hydroxyethoxymethyl)guanine (4.6 g), dry dimethylformamide (46 ml), acetic anhydride (16 ml) and dry pyridine (24 ml) was stirred at room temperature overnight. The resulting white solid was removed by filtration and dissolved in warm dimethylformamide (100 ml), pyridine (10 ml) and acetic anhydride (8 ml) added and the mixture stirred for 18 hr. The white solid formed was removed by filtration, washed with ethyl acetate and recrystallized from dimethylformamide to give 9-(2-acetyloxyethoxymethyl)guanine (3.3 g), m.p. 240°-241° C.

Workup

  1. customThe resulting white solid was removed by filtration
  2. dissolutiondissolved in warm dimethylformamide (100 ml)
  3. additionpyridine (10 ml) and acetic anhydride (8 ml) added
  4. stirringthe mixture stirred for 18 hr
  5. customThe white solid formed
  6. customwas removed by filtration
  7. washwashed with ethyl acetate
  8. customrecrystallized from dimethylformamide

Sources & evidence

ORD record
ord-8da2c2cc5acb4e91b35107c024093b4d
Source dataset
uspto-grants-1981_10
Patent number
US04294831

Reaction notes

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