Glycolic Acid → (5-ethoxy-3-methyl-3H-imidazo[4,5-b]pyridin-2-yl)methanol

HRID 356328Notes

Reaction equation

HRID 356328 reaction equation
[NH2:1][C:2]1[C:3]([NH:11][CH3:12])=[N:4][C:5]([O:8][CH2:9][CH3:10])=[CH:6][CH:7]=1.[C:13]([OH:17])(=O)[CH2:14]O>>[CH2:9]([O:8][C:5]1[N:4]=[C:3]2[N:11]([CH3:12])[C:14]([CH2:13][OH:17])=[N:1][C:2]2=[CH:7][CH:6]=1)[CH3:10]

Participants

3

Reactant 2

HCID 757Glycolic AcidHCID 10583205HCID 10583205, compound

Product 1

HCID 10560253(5-ethoxy-3-methyl-3H-imidazo[4,5-b]pyridin-2-yl)methanolYield 62.2%

Procedure

A procedure similar to that described in Preparation 43 was repeated, except that 4.15 g 3-amino-6-ethoxy-2-methylaminopyridine (prepared as described in Preparation 97), and 5.66 g of glycolic acid were used, and that the product was purified by column chromatography through silica gel, using a 10:1 by volume mixture of ethyl acetate and methanol as the eluent, to give 3.20 g of the title compound, melting at 161° C.

Workup

  1. customA procedure similar to that described in Preparation 43
  2. customthat the product was purified by column chromatography through silica gel
  3. additionby volume mixture of ethyl acetate and methanol as the eluent

Sources & evidence

ORD record
ord-9ee7c56e009d4c0cb8ff320b2ad306b9
Source dataset
uspto-grants-1998_11
Patent number
US05834501

Reaction notes

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