1,8-Diazabicyclo(5.4.0)undec-7-ene → 1-Ethyl-6,8-difluoro-1,4-dihydro-7-(7-methyl-2,7-diazaspiro[4.4]non-2-yl)-4-oxo-3-quinolinecarboxylic acid

HRID 980655Notes

Reaction equation

HRID 980655 reaction equation
Cl.Cl.[CH3:3][N:4]1[CH2:8][CH2:7][C:6]2([CH2:12][CH2:11][NH:10][CH2:9]2)[CH2:5]1.N12CCCN=C1CCCCC2.[CH2:24]([N:26]1[C:35]2[C:30](=[CH:31][C:32]([F:38])=[C:33](F)[C:34]=2[F:36])[C:29](=[O:39])[C:28]([C:40]([OH:42])=[O:41])=[CH:27]1)[CH3:25]>C(#N)C>[CH2:24]([N:26]1[C:35]2[C:30](=[CH:31][C:32]([F:38])=[C:33]([N:10]3[CH2:11][CH2:12][C:6]4([CH2:7][CH2:8][N:4]([CH3:3])[CH2:5]4)[CH2:9]3)[C:34]=2[F:36])[C:29](=[O:39])[C:28]([C:40]([OH:42])=[O:41])=[CH:27]1)[CH3:25]

Participants

5

Reactant 3

HCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 98351791-Ethyl-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acidHCID 134918062-Methyl-2,7-diazaspiro[4.4]nonane dihydrochloride

Product 1

HCID 137727601-Ethyl-6,8-difluoro-1,4-dihydro-7-(7-methyl-2,7-diazaspiro[4.4]non-2-yl)-4-oxo-3-quinolinecarboxylic acidYield 74.1%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A suspension of 0.64 g (3.0 mmol) 2-methyl-2,7-diazaspiro[4.4]nonane dihydrochloride in 40 ml acetonitrile was treated with 1.33 g (9.0 mmol) 1,8-diazabicyclo[5.4.0]undec-7-ene and 0.81 g (3.0 mmol) 1-ethyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid was added. The mixture was stirred 45 minutes at room temperature, refluxed 1.5 hours, and stirred at room temperature overnight. The precipitate was filtered and washed with acetonitrile and ether to afford 0.87 g of the title compound, mp 229°-231° C. (dec).

Workup

  1. additionwas added
  2. temperaturerefluxed 1.5 hours
  3. stirringstirred at room temperature overnight
  4. filtrationThe precipitate was filtered
  5. washwashed with acetonitrile and ether

Sources & evidence

ORD record
ord-a597c408770441cba0bac59979cc5c7f
Source dataset
uspto-grants-1987_01
Patent number
US04638067

Reaction notes

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