N,O-bis(trimethylsilyl)acetamide → benzhydryl (6R)-8-oxo-3-[(Z)-prop-1-enyl]-7-[[(2Z)-2-[2-(tritylamino)-1,3-thiazol-4-yl]-2-trityloxyiminoacetyl]amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

HRID 2352085Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2352085
[C:1]([NH:20][C:21]1[S:22][CH:23]=[C:24](/[C:26](=[N:30]/[O:31][C:32]([C:45]2[CH:50]=[CH:49][CH:48]=[CH:47][CH:46]=2)([C:39]2[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=2)[C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)/[C:27](O)=[O:28])[N:25]=1)([C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl.[NH2:52][CH:53]1[C:79](=[O:80])[N:55]2[C:56]([C:63]([O:65][CH:66]([C:73]3[CH:78]=[CH:77][CH:76]=[CH:75][CH:74]=3)[C:67]3[CH:72]=[CH:71][CH:70]=[CH:69][CH:68]=3)=[O:64])=[C:57]([CH:60]=[CH:61][CH3:62])[CH2:58][S:59][C@H:54]12.C/C(/O[Si](C)(C)C)=N\[Si](C)(C)C>ClCCl>[C:1]([NH:20][C:21]1[S:22][CH:23]=[C:24](/[C:26](=[N:30]/[O:31][C:32]([C:45]2[CH:50]=[CH:49][CH:48]=[CH:47][CH:46]=2)([C:39]2[CH:40]=[CH:41][CH:42]=[CH:43][CH:44]=2)[C:33]2[CH:34]=[CH:35][CH:36]=[CH:37][CH:38]=2)/[C:27]([NH:52][CH:53]2[C:79](=[O:80])[N:55]3[C:56]([C:63]([O:65][CH:66]([C:67]4[CH:68]=[CH:69][CH:70]=[CH:71][CH:72]=4)[C:73]4[CH:74]=[CH:75][CH:76]=[CH:77][CH:78]=4)=[O:64])=[C:57](/[CH:60]=[CH:61]\[CH3:62])[CH2:58][S:59][C@H:54]23)=[O:28])[N:25]=1)([C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1)([C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1

Komponenten

5

Edukt 3

HCID 6913588N,O-bis(trimethylsilyl)acetamideHCID 10327150(Z)-2-(Trityloxyimino)-2-[2-(tritylamino)thiazol-4-yl]acetic AcidHCID 131716177Diphenylmethyl 7-amino-3-(1-propenyl)-3-cephem-4-carboxylate hydrochloride

Produkt 1

HCID 16167558benzhydryl (6R)-8-oxo-3-[(Z)-prop-1-enyl]-7-[[(2Z)-2-[2-(tritylamino)-1,3-thiazol-4-yl]-2-trityloxyiminoacetyl]amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a mixture of 2-(2-tritylaminothiazol-4-yl)-2-(Z)-trityloxyiminoacetic acid (873 mg, 1.30 m moles) and dichloromethane (5 ml) was added phsophorous pentachloride (297 ng, 1.43 m moles) at -5° C. The mixture was allowed to stand for 20 min at the same temperature and added dropwise to a solution of diphenylmethyl 7-amino-3-(1-propenyl)-3-cephem-4-carboxylate hydrochloride (443 mg, 1 m mole) and N,O-bis(trimethylsilyl)acetamide (0.74 ml, 4.4 m moles) in dichloromethane (5 ml) at -5° C. The reaction mixture was allowed to stand for 20 min. at the same temperature and poured into ice-water. Extraction of the mixture with ethyl acetate and evaporation of the extracts under reduced pressure gave the crude product as an oil, which was chromatographed on a column of silica gel (eluted with chloroform) to give the title compound as an amorphous powder. Yield 510 mg (48%).

Aufarbeitung

  1. waitto stand for 20 min. at the same temperature
  2. extractionExtraction of the mixture
  3. customwith ethyl acetate and evaporation of the extracts under reduced pressure
  4. customgave the crude product as an oil, which
  5. customwas chromatographed on a column of silica gel (eluted with chloroform)

Quellen und Nachweise

ORD-Eintrag
ord-bd18e5a0295d4557bd79ebf7abefe70f
Quelldatensatz
uspto-grants-1989_10
Patentnummer
US04874856

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