Tri(butyl)vinylstannane → Ethyl 1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-5-vinyl-3-quinolinecarboxylate

HRID 2258118Notes

Reaction equation

Br[C:2]1[C:11]([F:12])=[C:10]([F:13])[C:9]([F:14])=[C:8]2[C:3]=1[C:4](=[O:23])[C:5]([C:18]([O:20][CH2:21][CH3:22])=[O:19])=[CH:6][N:7]2[CH:15]1[CH2:17][CH2:16]1.[CH2:24](C([SnH3])=C(CCCC)CCCC)[CH2:25]CC>C1(C)C=CC=CC=1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:15]1([N:7]2[C:8]3[C:3](=[C:2]([CH:24]=[CH2:25])[C:11]([F:12])=[C:10]([F:13])[C:9]=3[F:14])[C:4](=[O:23])[C:5]([C:18]([O:20][CH2:21][CH3:22])=[O:19])=[CH:6]2)[CH2:17][CH2:16]1

Participants

Conditions

Temperature: -18 °C

Procedure

5.9 g of ethyl 5-bromo-1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylate, 6.7 g of tributylvinylstannane and 0.69 g of tetrakis(triphenylphosphine)palladium(0) are refluxed for 10 hours in 60 ml of absolute toluene under a nitrogen atmosphere. The reaction mixture is cooled to -18° C., and the solid which has precipitated is filtered off with suction, washed with toluene and dried. 4.46 of the title compound are obtained (88% of theory).

Workup

customthe solid which has precipitated
filtrationis filtered off with suction
washwashed with toluene
customdried

Sources & evidence

ORD record: ord-e127c55241e2448e82fb6f9af52feb11
Source dataset: uspto-grants-1997_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05659038

Reaction notes

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