Diisopropylamine → methyl (2S)-5-[5-[{2-[3,5-bis(trifluoromethyl)phenyl]-2-methylpropanoyl}(methyl)amino]-4-(4-fluoro-2-methylphenyl)-2-pyridinyl]-2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-4-pentynoate

HRID 1798973Notes

Reaction equation

HRID 1798973 reaction equation
[F:1][C:2]([F:36])([F:35])[C:3]1[CH:4]=[C:5]([C:13]([CH3:34])([CH3:33])[C:14]([N:16]([C:18]2[CH:19]=[N:20][C:21](Cl)=[CH:22][C:23]=2[C:24]2[CH:29]=[CH:28][C:27]([F:30])=[CH:26][C:25]=2[CH3:31])[CH3:17])=[O:15])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1.[CH3:37][C:38]([O:41][C:42]([NH:44][C@@H:45]([CH2:50][C:51]#[CH:52])[C:46]([O:48][CH3:49])=[O:47])=[O:43])([CH3:40])[CH3:39].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(NC(C)C)(C)C>C(N(CC)CC)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I>[F:1][C:2]([F:36])([F:35])[C:3]1[CH:4]=[C:5]([C:13]([CH3:34])([CH3:33])[C:14]([N:16]([CH3:17])[C:18]2[C:23]([C:24]3[CH:29]=[CH:28][C:27]([F:30])=[CH:26][C:25]=3[CH3:31])=[CH:22][C:21]([C:52]#[C:51][CH2:50][C@H:45]([NH:44][C:42]([O:41][C:38]([CH3:40])([CH3:39])[CH3:37])=[O:43])[C:46]([O:48][CH3:49])=[O:47])=[N:20][CH:19]=2)=[O:15])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1

Participants

8

Reactant 4

HCID 7912DiisopropylamineHCID 11776TriphenylphosphineHCID 11817013(S)-Methyl 2-((tert-butoxycarbonyl)amino)pent-4-ynoate2×HCID 235027842-(3,5-Bis(trifluoromethyl)phenyl)-N-(6-chloro-4-(4-fluoro-2-methylphenyl)pyrid-3-yl)-N,2-dimethylpropanamide2×

Product 1

HCID 57965572methyl (2S)-5-[5-[{2-[3,5-bis(trifluoromethyl)phenyl]-2-methylpropanoyl}(methyl)amino]-4-(4-fluoro-2-methylphenyl)-2-pyridinyl]-2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-4-pentynoateYield 55.2%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8471TriethylamineSolvent

Procedure

A solution of 2-[3,5-bis(trifluoromethyl)phenyl]-N-[6-chloro-4-(4-fluoro-2-methylphenyl)-3-pyridinyl]-N,2-dimethylpropanamide (WO2005/002577 intermediate 4 D, 1 g, 1.877 mmol), methyl (2S)-2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-4-pentynoate (Intermediate 1, 1.279 g, 5.63 mmol), Pd(PPh3)2Cl2 (0.066 g, 0.094 mmol), copper(I) iodide (0.018 g, 0.094 mmol), triphenylphosphine (0.049 g, 0.188 mmol) in triethylamine (2 ml)/diisopropylamine (8 ml) was heated at 100° C. under microwave irradiation for 30 mins. The solvents were evaporated and the residue was purified by flash chromatography (Biotage system) on silica gel using a column 40+M and cyclohexane to cyclohexane/ethyl acetate 7:3 as eluent to afford the title compound (750 mg, 1.036 mmol, 55.2% yield) as a white solid. UPLC: Rt 1.02 min, m/z 724 [M+H]+.

Workup

  1. customThe solvents were evaporated
  2. customthe residue was purified by flash chromatography (Biotage system) on silica gel using a column 40+M and cyclohexane to cyclohexane/ethyl acetate 7:3 as eluent

Sources & evidence

ORD record
ord-65eb541fcaaf405eb411deccf9dcee5a
Source dataset
uspto-grants-2013_01
Patent number
US08344005B2

Reaction notes

Loading…