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

HRID 470921Notes

Reaction equation

HRID 470921 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(B(O)O)[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1>C(Cl)Cl.CC([O-])=O.CC([O-])=O.[Cu+2]>[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][N:23]([C:39]3[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=3)[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]

Participants

6

Reactant 3

HCID 1049PyridineHCID 66827Phenylboronic 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 86692194Methyl 2-tert-butoxy-2-(4-(4-fluorophenyl)-2-isopropyl-8,8-dimethyl-6-phenyl-5,6,7,8-tetrahydro-1,6-naphthyridin-3-yl)acetate

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolvent

Procedure

A mixture of Cu(OAc)2 (8.21 mg, 0.045 mmol) and pyridine (3.66 μl, 0.045 mmol) in CH2Cl2 (0.5 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) (10 mg, 0.023 mmol), phenylboronic acid (5.51 mg, 0.045 mmol) and 17 mg molecular sieves. The resulting mixture was stirred at room temperature open to air for 17 h. The mixture was adsorbed directly onto silica gel and purified by flash chromatography (Biotage; 0%-50% EtOAc/hexane). 1H NMR (500 MHz, CDCl3) δ ppm 7.38 (ddd, J=8.4, 5.8, 2.3 Hz, 1H), 7.27-7.16 (m, 5H), 6.87-6.73 (m, 3H), 4.86 (s, 1H), 3.94 (d, J=15.6 Hz, 1H), 3.73 (s, 3H), 3.69 (d, J=15.6 Hz, 1H), 3.55 (dt, J=13.0, 6.4 Hz, 1H), 3.44-3.34 (m, 1H), 3.28 (d, J=12.5Hz, 1H), 1.49 (d, J=3.7 Hz, 6H), 1.33 (d, J=6.1 Hz, 3H), 1.17 (d, J=6.7 Hz, 3H), 1.01 (s, 9H). 19F NMR (500 MHz, CDCl3) δ ppm −113.64. LCMS (M+H) calcd for C32H40FN2O3: 519.30. found: 519.45.

Workup

  1. stirringThe resulting mixture was stirred at room temperature open to air for 17 h
  2. custompurified by flash chromatography (Biotage; 0%-50% EtOAc/hexane)

Sources & evidence

ORD record
ord-401d553b13864251921153957528ffaa
Source dataset
uspto-grants-2014_01
Patent number
US08629276B2

Reaction notes

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