Toluene → (3R,9S)-9-(tert-butyldimethylsilyloxy)-7,7-dimethyl-4-(prop-1-en-2-yl)-3-(4-(trifluoromethyl)phenyl)-2',3',5',6,6',7,8,9-octahydro-3H-spiro[furo[3,4-c]quinoline-1,4'-pyran]

HRID 573787Notes

Reaction equation

HRID 573787 reaction equation
[Si:1]([O:8][C@H:9]1[CH2:18][C:17]([CH3:20])([CH3:19])[CH2:16][C:15]2[N:14]=[C:13](Cl)[C:12]3[C@@H:22]([C:30]4[CH:35]=[CH:34][C:33]([C:36]([F:39])([F:38])[F:37])=[CH:32][CH:31]=4)[O:23][C:24]4([CH2:29][CH2:28][O:27][CH2:26][CH2:25]4)[C:11]=3[C:10]1=2)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[C:40]([B-](F)(F)F)([CH3:42])=[CH2:41].[K+].C1(C)C=CC=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCCC1.O>[Si:1]([O:8][C@H:9]1[CH2:18][C:17]([CH3:20])([CH3:19])[CH2:16][C:15]2[N:14]=[C:13]([C:40]([CH3:42])=[CH2:41])[C:12]3[C@@H:22]([C:30]4[CH:35]=[CH:34][C:33]([C:36]([F:39])([F:38])[F:37])=[CH:32][CH:31]=4)[O:23][C:24]4([CH2:29][CH2:28][O:27][CH2:26][CH2:25]4)[C:11]=3[C:10]1=2)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]

Participants

7

Reactant 4

HCID 1140TolueneHCID 10796Cesium carbonateHCID 23670158Potassium (prop-1-en-2-yl)trifluoroborateHCID 86662528HCID 86662528, compound

Product 1

HCID 66762113(3R,9S)-9-(tert-butyldimethylsilyloxy)-7,7-dimethyl-4-(prop-1-en-2-yl)-3-(4-(trifluoromethyl)phenyl)-2',3',5',6,6',7,8,9-octahydro-3H-spiro[furo[3,4-c]quinoline-1,4'-pyran]

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
100 °C

Procedure

500 mg (3R,9S)-9-(tert-butyldimethylsilyloxy)-4-chloro-7,7-dimethyl-3-(4-(trifluoromethyl)phenyl)-2′,3′,5′,6,6′,7,8,9-octahydro-3H-spiro[furo[3,4-c]quinoline-1,4′-pyran] and 254 mg potassium isopropenyltrifluoroborate are dissolved in 3 ml tetrahydrofurane, 0.5 ml toluene and 3 ml of a 2 M solution of caesium carbonate in water. The mixture is purged for 15 minutes with argon. Then 42 mg 1,1′-bis-(diphenylphosphino)-ferrocene-dichloro-palladium-(II) complex with dichloromethane are added and the mixture is stirred for 72 hours at 100° C. The mixture is partitioned between water and dichloromethane. The aqueous phase is twice extracted with dichloromethane. The combined organic phases are dried with sodium sulphate and the solvents are evaporated in vacuo. The residue is chromatographed on silica gel (petrole ether/ethylacetate 100:0 to 90:10).

Workup

  1. customThe mixture is purged for 15 minutes with argon
  2. additionThen 42 mg 1,1′-bis-(diphenylphosphino)-ferrocene-dichloro-palladium-(II) complex with dichloromethane are added
  3. customThe mixture is partitioned between water and dichloromethane
  4. extractionThe aqueous phase is twice extracted with dichloromethane
  5. dry with materialThe combined organic phases are dried with sodium sulphate
  6. customthe solvents are evaporated in vacuo
  7. customThe residue is chromatographed on silica gel (petrole ether/ethylacetate 100:0 to 90:10)

Sources & evidence

ORD record
ord-aaf0ad7baf6945f282604a75c366ab49
Source dataset
uspto-grants-2015_05
Patent number
US09029544B2

Reaction notes

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