6-(Trifluoromethyl)indole → (2,2,3,3-Tetramethyl-cyclopropyl)-(6-trifluoromethyl-1H-indol-3-yl)methanone

HRID 227427Notes

Reaction equation

HRID 227427 reaction equation
[F:1][C:2]([F:13])([F:12])[C:3]1[CH:11]=[C:10]2[C:6]([CH:7]=[CH:8][NH:9]2)=[CH:5][CH:4]=1.C([Mg]Br)C.[CH3:18][C:19]1([CH3:27])[C:21]([CH3:23])([CH3:22])[CH:20]1[C:24](Cl)=[O:25]>ClCCl.[Cl-].[Zn+2].[Cl-]>[CH3:18][C:19]1([CH3:27])[C:21]([CH3:23])([CH3:22])[CH:20]1[C:24]([C:7]1[C:6]2[C:10](=[CH:11][C:3]([C:2]([F:1])([F:12])[F:13])=[CH:4][CH:5]=2)[NH:9][CH:8]=1)=[O:25]

Participants

6

Reactant 3

HCID 27775236-(Trifluoromethyl)indoleHCID 110410022,2,3,3-Tetramethylcyclopropane-1-carbonyl chlorideHCID 178418443HCID 178418443, compound

Product 1

HCID 24824344(2,2,3,3-Tetramethyl-cyclopropyl)-(6-trifluoromethyl-1H-indol-3-yl)methanoneYield 10%

Reagents, catalysts & solvents 2

HCID 3007855ZincchlorideCatalystHCID 6344DichloromethaneSolvent

Procedure

A mixture of 6-(trifluoromethyl)indole (Lancaster, 1.0 g, 5.4 mmol), ethylmagnesium bromide (1.0 M solution in THF, 6.6 mL, 6.6 mmol), zinc chloride (1.0 M solution in Et2O, 6.6 mL, 6.6 mmol) and the product of Example 1A (8.1 mmol) in 40 mL of dichloromethane was processed as described in Example 1B to provide the title compound (0.17 g, 0.53 mmol, 10% yield). MS (DCI/NH3) m/z 310 (M+H)+.

Sources & evidence

ORD record
ord-fc333d56959146c39e38e0df07e10780
Source dataset
uspto-grants-2009_07
Patent number
US07560481B2

Reaction notes

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