m-Chloroperbenzoic acid → HCID 178452988, compound

HRID 1707455Notes

Reaction equation

HRID 1707455 reaction equation
[C:1]1([CH:7]([O:14][C:15]([C:17]2[N:22]3[C:23](=[O:63])[C@@H:24]([NH:25][C:26](=[O:62])/[C:27](/[C:49]4[N:50]=[C:51]([NH:54][C:55]([O:57][C:58]([CH3:61])([CH3:60])[CH3:59])=[O:56])[S:52][CH:53]=4)=[N:28]\[O:29][C:30]([C:43]4[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=4)([C:37]4[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=4)[C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=4)[C@H:21]3[S:20][CH2:19][C:18]=2[CH2:64][S:65][C:66]2[N:67]=[N:68][NH:69][CH:70]=2)=[S:16])[C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.ClC1C=CC=C(C(OO)=[O:79])C=1>ClCCl.CO.S([O-])([O-])(=O)=S.[Na+].[Na+]>[C:1]1([CH:7]([O:14][C:15]([C:17]2[N:22]3[C:23](=[O:63])[C@@H:24]([NH:25][C:26](=[O:62])/[C:27](/[C:49]4[N:50]=[C:51]([NH:54][C:55]([O:57][C:58]([CH3:60])([CH3:61])[CH3:59])=[O:56])[S:52][CH:53]=4)=[N:28]\[O:29][C:30]([C:31]4[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=4)([C:37]4[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=4)[C:43]4[CH:44]=[CH:45][CH:46]=[CH:47][CH:48]=4)[C@H:21]3[S:20](=[O:79])[CH2:19][C:18]=2[CH2:64][S:65][C:66]2[N:67]=[N:68][NH:69][CH:70]=2)=[S:16])[C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

6

Reactant 2

HCID 70297m-Chloroperbenzoic acidHCID 178452987HCID 178452987, compound

Product 1

HCID 178452988HCID 178452988, compoundYield 90.7%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 6344DichloromethaneSolventHCID 24477Sodium ThiosulfateSolvent

Procedure

To a solution of 7β-[(Z)-2-(2-t-butoxycarbonylaminothiazol-4-yl)-2-trityloxyiminoacetamido]-3-(1,2,3-triazol-4-yl)thiomethylthio-3-cephem-4-carboxylic acid diphenylmethyl ester (511 mg: 0.5 mMol.) in a mixture of dichloromethane (10 ml) and methanol (10 ml) is added m-chloroperbenzoic acid (purity: 80%: 54 mg: 0.25 mMol.) at -30° C., and the mixture is stirred for 1 hour. The reaction mixture is diluted with aqueous 5% sodium thiosulfate and extracted with ethyl acetate. The extract solution was washed with aqueous sodium hydrogencarbonate, diluted hydrochloric acid, and brine, dried over sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel chromatography (toluene-ethyl acetate=2:1 to 1:1) to give 7β-[(Z)-2-(2-t-butoxycarbonylaminothiazol-4-yl)-2-trityloxyiminoacetamido]-3-(1,2,3-triazol-4-yl)thiomethylthio-3-cephem-4-carboxylic acid diphenylmethyl ester 1-oxide (232 mg). Yield: 45%. A part of the starting material (236 mg: 48%) was recovered.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe extract solution was washed with aqueous sodium hydrogencarbonate, diluted hydrochloric acid, and brine
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel chromatography (toluene-ethyl acetate=2:1 to 1:1)

Sources & evidence

ORD record
ord-3e5e7877c7734866a75cfa13a56f4def
Source dataset
uspto-grants-1994_10
Patent number
US05352792

Reaction notes

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