1,10-Phenanthroline → 5-((3-fluoro-4-methoxyphenyl)ethynyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

HRID 1401697Notes

Reaction equation

HRID 1401697 reaction equation
[CH3:1][N:2]1[CH2:15][CH2:14][C:5]2[NH:6][C:7]3[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=3[C:4]=2[CH2:3]1.N1C2C(=CC=C3C=2N=CC=C3)C=CC=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].Br[C:39]#[C:40][C:41]1[CH:46]=[CH:45][C:44]([O:47][CH3:48])=[C:43]([F:49])[CH:42]=1>C1(C)C=CC=CC=1.S([O-])([O-])(=O)=O.[Cu+2]>[F:49][C:43]1[CH:42]=[C:41]([C:40]#[C:39][N:6]2[C:7]3[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=3[C:4]3[CH2:3][N:2]([CH3:1])[CH2:15][CH2:14][C:5]2=3)[CH:46]=[CH:45][C:44]=1[O:47][CH3:48]

Participants

7

Reactant 4

HCID 13181,10-PhenanthrolineHCID 62657Potassium Phosphate, TribasicHCID 2092911H-Pyrido[4,3-b]indole, 2,3,4,5-tetrahydro-2,8-dimethyl-HCID 59455074HCID 59455074, compound

Product 1

HCID 594548915-((3-fluoro-4-methoxyphenyl)ethynyl)-2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indoleYield 7.6%

Reagents, catalysts & solvents 2

HCID 24462Copper SulfateCatalystHCID 1140TolueneSolvent

Conditions

Temperature
80 °C

Procedure

2,8-Dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (100 mg, 0.49 mmol) was dissolved in toluene (5 mL), and copper sulfate (24 mg, 0.099 mmol) was added, followed by 1,10-phenanthroline (35 mg, 0.19 mmol), potassium phosphate (0.211 mg, 0.99 mmol) and 4-(bromoethynyl)-2-fluoro-1-methoxybenzene (125 mg, 0.54 mmol), and the mixture flushed with nitrogen. The reaction mixture was heated at 80° C. overnight (16 h). Product was detected by LCMS. The reaction mixture was filtered through Celite, and washed with DCM. The combined organic layer was concentrated under vacuum to obtain product which was purified by column chromatography (60-80% EtOAc in hexane as eluent), and repurified by preparative TLC to obtain product as a brown solid (13 mg). 1H NMR (CDCl3, freebase) δ (ppm): 7.42 (d, 1H), 7.25 (m, 2H), 7.18 (s, 1H), 7.10 (d, 1H), 6.92 (t, 1H), 3.95 (s, 3H), 3.62 (s, 2H), 2.95 (m, 2H), 2.85 (m, 2H), 2.60 (s, 3H), 2.40 (s, 3H).

Workup

  1. customthe mixture flushed with nitrogen
  2. filtrationThe reaction mixture was filtered through Celite
  3. washwashed with DCM
  4. concentrationThe combined organic layer was concentrated under vacuum
  5. customto obtain product which
  6. customwas purified by column chromatography (60-80% EtOAc in hexane as eluent)
  7. customrepurified by preparative TLC

Sources & evidence

ORD record
ord-a0d7a0591dd9432381139b9c6c5e1dee
Source dataset
uspto-grants-2014_12
Patent number
US08907097B2

Reaction notes

Loading…