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

HRID 470923Notes

Reaction equation

HRID 470923 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][CH:42]=[C:41](B(O)O)[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][CH:42]=[C:41]([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:40]=1

Participants

6

Reactant 3

HCID 1049PyridineHCID 2734315(3-Phenylphenyl)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 86692196Methyl 2-(6-([1,1'-biphenyl]-3-yl)-4-(4-fluorophenyl)-2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-3-yl)-2-(tert-butoxy)acetateYield 37.4%

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolvent

Procedure

A mixture of Cu(OAc)2 (16 mg, 0.09 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), [1,1′-biphenyl]-3-ylboronic acid (17.9 mg, 0.09 mmol) and 34 mg molecular sieves. The resulting mixture was stirred, uncovered, at room temperature for 21 h. The mixture was adsorbed directly onto silica gel and purified by flash column chromatography (Biotage; 0%-50% EtOAc/hexane) to give methyl 2-(6-([1,1′-biphenyl]-3-yl)-4-(4-fluorophenyl)-2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydro-1,6-naphthyridin-3-yl)-2-(tert-butoxy)acetate (10 mg, 37% yield) as a white solid. 1H NMR (500 MHz, CDCl3) δ ppm 7.58-7.52 (m, 2H), 7.41-7.35 (m, 2H), 7.35-7.30 (m, 1H), 7.27-7.16 (m, 3H), 7.08-6.99 (m, 2H), 6.79-6.70 (m, 1H), 4.88 (s, 1H), 4.01 (d, J=15.6 Hz, 1H), 3.75 (d, J=15.9 Hz, 1H), 3.73 (s, 3H), 3.56 (dt, J=13.1, 6.6 Hz, 1H), 3.49-3.41 (m, 1H), 3.38-3.30 (m, 1H), 1.59 (s, 1H), 1.51 (d, J=4.0 Hz, 6H), 1.35 (s, 3H), 1.17 (d, J=6.7 Hz, 3H), 1.02 (s, 9H). 19F NMR (500 MHz, CDCl3) δ ppm −113.64. LCMS (M+H) calcd for C38H44FN2O3: 595.33. found: 595.4.

Workup

  1. stirringThe resulting mixture was stirred
  2. waituncovered, at room temperature for 21 h
  3. custompurified by flash column chromatography (Biotage; 0%-50% EtOAc/hexane)

Sources & evidence

ORD record
ord-cde1508916d742dd9bde9cf472458749
Source dataset
uspto-grants-2014_01
Patent number
US08629276B2

Reaction notes

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