Acetic Acid → 5-{4-(5-Benzyloxy-3-methylimidazo[5,4-b]pyridin-2-ylmethoxy)benzyl}thiazolidine-2,4-dione

HRID 55468Notes

Reaction equation

HRID 55468 reaction equation
[CH2:1]([O:8][C:9]1[N:14]=[C:13]2[N:15]([CH3:53])[C:16]([CH2:18][O:19][C:20]3[CH:52]=[CH:51][C:23]([CH2:24][CH:25]4[S:29][C:28](=[O:30])[N:27](C(C5C=CC=CC=5)(C5C=CC=CC=5)C5C=CC=CC=5)[C:26]4=[O:50])=[CH:22][CH:21]=3)=[N:17][C:12]2=[CH:11][CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(O)(=O)C>O>[CH2:1]([O:8][C:9]1[N:14]=[C:13]2[N:15]([CH3:53])[C:16]([CH2:18][O:19][C:20]3[CH:52]=[CH:51][C:23]([CH2:24][CH:25]4[S:29][C:28](=[O:30])[NH:27][C:26]4=[O:50])=[CH:22][CH:21]=3)=[N:17][C:12]2=[CH:11][CH:10]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

4

Reactant 2

HCID 176Acetic AcidHCID 118029495-{4-(5-Benzyloxy-3-methylimidazo[5,4-b]pyridin-2-ylmethoxy)benzyl}-3-triphenylmethylthiazolidine-2,4-dione

Product 1

HCID 106243475-{4-(5-Benzyloxy-3-methylimidazo[5,4-b]pyridin-2-ylmethoxy)benzyl}thiazolidine-2,4-dioneYield 95.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A procedure similar to that described in Example 12 was repeated, except that 1.00 g of 5-{4-(5-benzyloxy-3-methyl-3H-imidazo[4,5-b]pyridin-2-ylmethoxy)benzyl}-3-triphenylmethylthiazolidine-2,4-dione (prepared as described in Preparation 95) was treated with 12 ml of a 3:1 by volume mixture of acetic acid and water. After working up the product as described in Example 12, the resulting crude product was crystallized by trituration with ethyl acetate, to give 0.63 g of the title compound, melting at 210°-211° C.

Workup

  1. customthe resulting crude product was crystallized by trituration with ethyl acetate

Sources & evidence

ORD record
ord-4eb721cfab5e4d119314fb0e0025ea63
Source dataset
uspto-grants-1997_04
Patent number
US05624935

Reaction notes

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