Hydrochloric Acid → HCID 131712158, compound

HRID 848757Notes

Reaction equation

HRID 848757 reaction equation
[C:1]([S:4][CH2:5][C:6]1[CH2:7][S:8][C@@H:9]2[CH:16]([NH:17][C:18](=[O:52])[C:19]([C:27]3[N:28]=[C:29]([NH:32][C:33]([C:46]4[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=4)([C:40]4[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=4)[C:34]4[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=4)[S:30][CH:31]=3)=[N:20][O:21]C(C)(OC)C)[C:15](=[O:53])[N:10]2[C:11]=1[C:12]([OH:14])=[O:13])(=[O:3])[CH3:2].C(NCC)C.Cl>CC(C)=O>[C:1]([S:4][CH2:5][C:6]1[CH2:7][S:8][C@@H:9]2[CH:16]([NH:17][C:18](=[O:52])[C:19]([C:27]3[N:28]=[C:29]([NH:32][C:33]([C:46]4[CH:47]=[CH:48][CH:49]=[CH:50][CH:51]=4)([C:34]4[CH:35]=[CH:36][CH:37]=[CH:38][CH:39]=4)[C:40]4[CH:45]=[CH:44][CH:43]=[CH:42][CH:41]=4)[S:30][CH:31]=3)=[N:20][OH:21])[C:15](=[O:53])[N:10]2[C:11]=1[C:12]([OH:14])=[O:13])(=[O:3])[CH3:2]

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 131712159HCID 131712159, compound

Product 1

HCID 131712158HCID 131712158, compound

Reagents, catalysts & solvents 1

HCID 180AcetoneSolvent

Procedure

The product of Step A was added to a mixture of 10 ml of acetone and 3.5 ml of 2 N hydrochloric acid and the acetone was evaporated. The mixture was extracted with ethyl acetate and the ethyl acetate phase was triturated with ether. The mixture was vacuum filtered to obtain the syn isomer of 3-acetylthiomethyl-7-[2-(2-tritylamino-4-thiazolyl)-2-hydroxyimino-acetamido]-ceph-3-eme-4-carboxylic acid which was then stirred with 4 ml of aqueous formic acid (1 volume water--2 volumes of formic acid) at 45° C. for 10 minutes. The mixture was evaporated to dryness under reduced pressure and the residue was triturated with 5 ml of water. The mixture was vacuum filtered and dried under reduced pressure to obtain 1 g of raw product which was dissolved in 20 ml of ethanol. The mixture was vacuum filtered to remove insolubles and the filtrate was evaporated to half its volume. 20 ml of ethanol were added thereto and the mixture was again evaporated to half its volume. The mixture was vacuum filtered and the product was washed with ethanol and with ether to obtain 0.5 g of purified syn isomer of 3-acetylthiomethyl-7-[2-(2-amino-4-thiazolyl)-2-hydroxyimino-acetamido]-ceph-3-eme-4-carboxylic acid.

Workup

  1. customthe acetone was evaporated
  2. extractionThe mixture was extracted with ethyl acetate
  3. customthe ethyl acetate phase was triturated with ether
  4. filtrationfiltered

Sources & evidence

ORD record
ord-7c5042e6c9024224b25573ace767042d
Source dataset
uspto-grants-1981_10
Patent number
US04297352

Reaction notes

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