Acetic Acid → 7-[2-(2-Formamidothiazol-4-yl)-2-butoxyiminoacetamido]-3-chloro-3-cephem-4-carboxylic acid

HRID 1650545Notes

Reaction equation

HRID 1650545 reaction equation
[CH:1]([NH:3][C:4]1[S:5][CH:6]=[C:7]([C:9](=[N:36][O:37][CH2:38][CH2:39][CH2:40][CH3:41])[C:10]([NH:12][CH:13]2[C:34](=[O:35])[N:15]3[C:16]([C:21]([O:23]CC4C=CC([N+]([O-])=O)=CC=4)=[O:22])=[C:17]([Cl:20])[CH2:18][S:19][C@H:14]23)=[O:11])[N:8]=1)=[O:2].O.C(O)(=O)C.CO>[C].[Pd].O1CCCC1>[CH:1]([NH:3][C:4]1[S:5][CH:6]=[C:7]([C:9](=[N:36][O:37][CH2:38][CH2:39][CH2:40][CH3:41])[C:10]([NH:12][CH:13]2[C:34](=[O:35])[N:15]3[C:16]([C:21]([OH:23])=[O:22])=[C:17]([Cl:20])[CH2:18][S:19][C@H:14]23)=[O:11])[N:8]=1)=[O:2]

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 887MethanolHCID 962WaterHCID 1317124894-Nitrobenzyl 7-[2-(2-formamidothiazol-4-yl)-2-butoxyiminoacetamido]-3-chloro-3-cephem-4-carboxylate

Product 1

HCID 1317124907-[2-(2-Formamidothiazol-4-yl)-2-butoxyiminoacetamido]-3-chloro-3-cephem-4-carboxylic acidYield 66.2%

Reagents, catalysts & solvents 2

HCID 178418390HCID 178418390, compoundCatalystHCID 8028TetrahydrofuranSolvent

Procedure

A mixture of 4-nitrobenzyl 7-[2-(2-formamidothiazol-4-yl)-2-butoxyiminoacetamido]-3-chloro-3-cephem-4-carboxylate (syn isomer, 2.7 g.), 10% palladium carbon (1.3 g.), water (4 ml.), acetic acid (0.4 ml.), methanol (27 ml.) and tetrahydrofuran (54 ml.) was treated in a similar manner to that of Example 21-(2) to give 7-[2-(2-formamidothiazol-4-yl)-2-butoxyiminoacetamido]-3-chloro-3-cephem-4-carboxylic acid (syn isomer, 1.4 g.), pale yellow powder.

Workup

  1. additionwas treated in a similar manner to that of Example 21-(2)

Sources & evidence

ORD record
ord-9e46f5b9ba0e4bfe8b9fe105770af12d
Source dataset
uspto-grants-1990_05
Patent number
US04923998

Reaction notes

Loading…