Tributylphosphine → 5-{4-(3-Methylimidazo[5,4-d]pyrimidin-2-ylmethoxy)benzyl]-3-triphenylmethylthiazolidine-2,4-dione

HRID 55497Notes

Reaction equation

HRID 55497 reaction equation
[OH:1][CH2:2][C:3]1[N:4]([CH3:12])[C:5]2[N:6]=[CH:7][N:8]=[CH:9][C:10]=2[N:11]=1.O[C:14]1[CH:46]=[CH:45][C:17]([CH2:18][CH:19]2[S:23][C:22](=[O:24])[N:21]([C:25]([C:38]3[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=3)([C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)[C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[C:20]2=[O:44])=[CH:16][CH:15]=1.C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1C=CC=CC=1>[CH3:12][N:4]1[C:5]2[N:6]=[CH:7][N:8]=[CH:9][C:10]=2[N:11]=[C:3]1[CH2:2][O:1][C:14]1[CH:46]=[CH:45][C:17]([CH2:18][CH:19]2[S:23][C:22](=[O:24])[N:21]([C:25]([C:38]3[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=3)([C:32]3[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=3)[C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[C:20]2=[O:44])=[CH:16][CH:15]=1

Participants

6

Reactant 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 28181265-(4-Hydroxybenzyl)-3-triphenylmethylthiazolidine-2,4-dioneHCID 232983452-Hydroxymethyl-3-methylimidazo[5,4-d]pyrimidine

Product 1

HCID 232983665-{4-(3-Methylimidazo[5,4-d]pyrimidin-2-ylmethoxy)benzyl]-3-triphenylmethylthiazolidine-2,4-dione

Reagents, catalysts & solvents 1

HCID 241BenzeneSolvent

Procedure

A procedure similar to that described in Preparation 4 was repeated, except that 0.37 g of 2-hydroxymethyl-3methylimidazo[5,4-d]pyrimidine (prepared as described in Preparation 50), 2.51 g of 5-(4-hydroxybenzyl)-3-triphenylmethylthiazolidine-2,4 dione, 1.34 ml of tributylphosphine, 1.36 g of 1,1'-(azodicarbonyl)dipiperidine and 50 ml of benzene were used, to give the title compound as a crude product. This crude product was purified by column chromatography through silica gel, using a gradient elution method, with mixtures of hexane and ethyl acetate in a ratio of 2:1 by volume, and then in ratios ranging from 1:1 to 1:2 by volume, and subsequently a 6:1 by volume mixture of ethyl acetate and ethanol as the eluent. The desired fractions were collected and concentrated by evaporation under reduced pressure. The concentrate was further purified by preparative reverse-phase high speed liquid chromatography through YMC-Pack ODS-A (a product of YMC Inc.) using a 100:100:1:1 by volume mixture of acetonitrile, water, acetic acid and triethylamine as the eluent, to give 0.24 g of the title compound, melting at 55°-65° C. (softening).

Workup

  1. customA procedure similar to that described in Preparation 4

Sources & evidence

ORD record
ord-b6a5a2d0e86c40ffbfbe78708f9130d6
Source dataset
uspto-grants-1997_04
Patent number
US05624935

Reaction notes

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