Hydrochloric Acid → ethyl ({[2-[6-ethyl-2,4-dioxo-1-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-1,4-dihydrothieno[2,3-d]pyrimidin-3(2H)-yl]-1-(4-methoxyphenyl)ethylidene]amino}oxy)acetate

HRID 1889582Notes

Reaction equation

HRID 1889582 reaction equation
[CH2:1]([C:3]1[S:43][C:6]2[N:7]([CH2:24][C:25]3[CH:30]=[CH:29][C:28]([C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=4[C:37]4[NH:41][C:40](=[O:42])[O:39][N:38]=4)=[CH:27][CH:26]=3)[C:8](=[O:23])[N:9]([CH2:12][C:13]([C:15]3[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][CH:16]=3)=O)[C:10](=[O:11])[C:5]=2[CH:4]=1)[CH3:2].Cl.[NH2:45][O:46][CH2:47][C:48]([O:50][CH2:51][CH3:52])=[O:49].N1C=CC=CC=1.Cl>O.C(Cl)(Cl)Cl.C(O)C>[CH2:1]([C:3]1[S:43][C:6]2[N:7]([CH2:24][C:25]3[CH:30]=[CH:29][C:28]([C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=4[C:37]4[NH:41][C:40](=[O:42])[O:39][N:38]=4)=[CH:27][CH:26]=3)[C:8](=[O:23])[N:9]([CH2:12][C:13](=[N:45][O:46][CH2:47][C:48]([O:50][CH2:51][CH3:52])=[O:49])[C:15]3[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][CH:16]=3)[C:10](=[O:11])[C:5]=2[CH:4]=1)[CH3:2]

Participants

8

Reactant 4

HCID 313Hydrochloric AcidHCID 1049PyridineHCID 12283957Ethyl aminoxyacetate hydrochlorideHCID 1358760656-ethyl-3-[2-(4-methoxyphenyl)-2-oxoethyl]-1-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione

Product 1

HCID 136052254ethyl ({[2-[6-ethyl-2,4-dioxo-1-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}-1,4-dihydrothieno[2,3-d]pyrimidin-3(2H)-yl]-1-(4-methoxyphenyl)ethylidene]amino}oxy)acetate

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 6212ChloroformSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 6-ethyl-3-[2-(4-methoxyphenyl)-2-oxoethyl]-1-{[2′-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione (0.2 g), ethyl (aminooxy)acetate hydrochloride (0.053 g), pyridine (10 mL) and ethanol (10 mL) was stirred at 100° C. for 16 hr. To the reaction mixture were added chloroform and water, and the mixture was adjusted to pH 4 with 1N hydrochloric acid. The chloroform layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give the title compound as a stereoisomer mixture (0.061 g, 26%).

Workup

  1. washThe chloroform layer was washed with saturated brine
  2. dry with materialdried over anhydrous magnesium sulfate
  3. customThe solvent was evaporated under reduced pressure
  4. customThe obtained residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-d1b28c9e0d024c0d97ea450ba6740447
Source dataset
uspto-grants-2013_08
Patent number
US08501750B2

Reaction notes

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