Pyridine → Methyl 2-(6-([1,1'-biphenyl]-4-yl)-4-(4-fluorophenyl)-2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-3-yl)-2-(tert-butoxy)acetate

HRID 470924Notes

Reaction equation

HRID 470924 reaction equation
N1C=CC=CC=1.[C:7]([O:11][CH:12]([C:17]1[C:18]([CH:36]([CH3:38])[CH3:37])=[N:19][C:20]2[C:21]([CH3:35])([CH3:34])[CH2:22][NH:23][CH2:24][C:25]=2[C:26]=1[C:27]1[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=1)[C:13]([O:15][CH3:16])=[O:14])([CH3:10])([CH3:9])[CH3:8].[C:39]1([C:48]2[CH:53]=[CH:52][CH:51]=[CH:50][CH:49]=2)[CH:44]=[CH:43][C:42](B(O)O)=[CH:41][CH:40]=1>C(Cl)Cl.CC([O-])=O.CC([O-])=O.[Cu+2]>[C:39]1([C:48]2[CH:49]=[CH:50][CH:51]=[CH:52][CH:53]=2)[CH:44]=[CH:43][C:42]([N:23]2[CH2:22][C:21]([CH3:35])([CH3:34])[C:20]3[N:19]=[C:18]([CH:36]([CH3:38])[CH3:37])[C:17]([CH:12]([O:11][C:7]([CH3:10])([CH3:9])[CH3:8])[C:13]([O:15][CH3:16])=[O:14])=[C:26]([C:27]4[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=4)[C:25]=3[CH2:24]2)=[CH:41][CH:40]=1

Participants

6

Reactant 3

HCID 1049PyridineHCID 1512531,1'-Biphenyl-4-yl-boronic acidHCID 86692192Methyl 2-tert-butoxy-2-(4-(4-fluorophenyl)-2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-3-yl)acetate2×

Product 1

HCID 86692197Methyl 2-(6-([1,1'-biphenyl]-4-yl)-4-(4-fluorophenyl)-2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-3-yl)-2-(tert-butoxy)acetateYield 84.8%

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolvent

Procedure

A mixture of Cu(OAc)2 (16.42 mg, 0.090 mmol) and pyridine (7 μl, 0.09 mmol) in CH2Cl2 (1 mL) was stirred for 5 min. Added to this were methyl 2-(tert-butoxy)-2-(4-(4-fluorophenyl)-2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-3-yl)acetate (intermediate 5) (20 mg, 0.045 mmol), 4-biphenylboronic acid (17.90 mg, 0.09 mmol) and 34 mg molecular sieves. After stirring uncovered for 18 h, the mixture was adsorbed directly onto silica gel and was purified by flash column chromatography (Biotage; 0%-50% EtOAc/hexane) to give methyl 2-(6-([1,1′-biphenyl]-4-yl)-4-(4-fluorophenyl)-2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-3-yl)-2-(tert-butoxy)acetate (22.7 mg, 84% yield) as a colorless oil. LCMS (M+H) calcd for C38H44FN2O3: 595.33. found: 595.4. 19F NMR (500 MHz, Methanol d4) δ ppm: −113.055.

Workup

  1. stirringAfter stirring
  2. waituncovered for 18 h
  3. customwas purified by flash column chromatography (Biotage; 0%-50% EtOAc/hexane)

Sources & evidence

ORD record
ord-a180de50cf324295a3908a2348d282ae
Source dataset
uspto-grants-2014_01
Patent number
US08629276B2

Reaction notes

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