Water → 155272-06-3

HRID 375370Notes

Reaction equation

[CH2:1]([N:3]1[C:12](=[O:13])[C:11]2[N:10]([CH3:14])[C:9](/[CH:15]=[CH:16]/[C:17]3[CH:22]=[CH:21][C:20]([OH:23])=[CH:19][CH:18]=3)=[N:8][C:7]=2[N:6]([CH2:24][CH3:25])[C:4]1=[O:5])[CH3:2].C(=O)([O-])[O-].[K+].[K+].[CH2:32](Br)[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1.O>CN(C)C=O>[CH2:32]([O:23][C:20]1[CH:19]=[CH:18][C:17](/[CH:16]=[CH:15]/[C:9]2[N:10]([CH3:14])[C:11]3[C:12](=[O:13])[N:3]([CH2:1][CH3:2])[C:4](=[O:5])[N:6]([CH2:24][CH3:25])[C:7]=3[N:8]=2)=[CH:22][CH:21]=1)[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1

Participants

Conditions

Temperature: 80 °C

Procedure

Compound 175 (100 mg, 0.29 mmol) obtained in Reference Example 114 was dissolved in 2 ml of dimethylformamide. To the solution were added 162 mg (1.17 mmol) of potassium carbonate and 0.28 ml (2.35 mmol) of benzyl bromide, and the mixture was stirred at 80° C. for 2.5 hours. Water was added thereto under ice cooling to dissolve potassium carbonate and the deposited crystals were collected by filtration. The collected crude crystals were dissolved in chloroform, washed with a saturated aqueous solution of sodium chloride and dried over anhydrous sodium sulfate, followed by evaporation under reduced pressure. The residue was recrystallized from hexane/ethyl acetate to give 67 mg (yield 53%) of Compound 176 as yellow needles.

Workup

filtrationthe deposited crystals were collected by filtration
customThe collected crude crystals
dissolutionwere dissolved in chloroform
washwashed with a saturated aqueous solution of sodium chloride
dry with materialdried over anhydrous sodium sulfate
customfollowed by evaporation under reduced pressure
customThe residue was recrystallized from hexane/ethyl acetate

Sources & evidence

ORD record: ord-9807c130c85a491eb94bf66730e9b488
Source dataset: uspto-grants-1996_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05484920

Reaction notes

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