1,8-Diazabicyclo(5.4.0)undec-7-ene → Ethyl 6,8-difluoro-1-methyl-4-oxo-7-((S)-3-trifluoroacetylamino-1-pyrrolidinyl)-1H,4H-[1,3]thiazeto[3,2-a]quinoline-3-carboxylate

HRID 893577Notes

Reaction equation

HRID 893577 reaction equation
[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10]([F:13])[C:11]=1F)[N:8]1[CH:14]([CH3:16])[S:15][C:7]1=[C:6]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[C:5]2=[O:22].Cl.[F:24][C:25]([F:35])([F:34])[C:26]([NH:28][C@H:29]1[CH2:33][CH2:32][NH:31][CH2:30]1)=[O:27].C1CCN2C(=NCCC2)CC1>CN(C)C=O>[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10]([F:13])[C:11]=1[N:31]1[CH2:32][CH2:33][C@H:29]([NH:28][C:26](=[O:27])[C:25]([F:35])([F:34])[F:24])[CH2:30]1)[N:8]1[CH:14]([CH3:16])[S:15][C:7]1=[C:6]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[C:5]2=[O:22]

Participants

5

Reactant 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 9973824ethyl 6,7,8-trifluoro-1-methyl-4-oxo-4H-[1,3]thiazeto[3,2-a]quinoline-3-carboxylateHCID 42614571(3S)-(-)-3-(Trifluoroacetamido)pyrrolidine Hydrochloride

Product 1

HCID 54557724Ethyl 6,8-difluoro-1-methyl-4-oxo-7-((S)-3-trifluoroacetylamino-1-pyrrolidinyl)-1H,4H-[1,3]thiazeto[3,2-a]quinoline-3-carboxylate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 1.34 g of ethyl 6,7,8-trifluoro-1-methyl-4-oxo-1H,4H-[1,3]thiazeto[3,2-a]quinoline-3-carboxylate, 2.66 g of (S)-3-trifluoroacetylaminopyrrolidine hydrochloride [[α]D20 -28.6° (c=1, MeOH)], 1.80 g of 1.8-diazabicyclo[5,4,0]-7-undecene and 30 ml of N,N-dimethylformamide was stirred at room temperature for 5 hours. The reaction mixture was concentrated in vacuo, and water was added to the residue. The precipitate was collected by filtration and was chromatographed on silica gel using chloroform-methanol (8:2) to give the desired compound, which was recrystallized from methanol to give 0.80 g of pale yellow needles, m.p. 219°-224° C.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo, and water
  2. additionwas added to the residue
  3. filtrationThe precipitate was collected by filtration
  4. customwas chromatographed on silica gel

Sources & evidence

ORD record
ord-076e8384be844882a0cf22874991912a
Source dataset
uspto-grants-1992_06
Patent number
US05126337

Reaction notes

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