Triethylamine → HCID 86673036, compound

HRID 1853267Notes

Reaction equation

HRID 1853267 reaction equation
[C:1]([O:5][N:6]=[C:7]1[C:16]2[C:11](=[CH:12][C:13](Br)=[CH:14][CH:15]=2)[O:10][C:9]([C:18]2[N:19]=[CH:20][C:21]3[C:26]([CH:27]=2)=[CH:25][CH:24]=[CH:23][CH:22]=3)=[CH:8]1)([CH3:4])([CH3:3])[CH3:2].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(N(CC)CC)C.[C:54]([C:56]1[CH:61]=[CH:60][CH:59]=[CH:58][N:57]=1)#[CH:55].[Na]>CN(C)C=O.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)I>[C:1]([O:5][N:6]=[C:7]1[C:16]2[C:11](=[CH:12][C:13]([C:55]#[C:54][C:56]3[CH:61]=[CH:60][CH:59]=[CH:58][N:57]=3)=[CH:14][CH:15]=2)[O:10][C:9]([C:18]2[N:19]=[CH:20][C:21]3[C:26]([CH:27]=2)=[CH:25][CH:24]=[CH:23][CH:22]=3)=[CH:8]1)([CH3:4])([CH3:3])[CH3:2]

Participants

9

Reactant 5

HCID 8471TriethylamineHCID 11776TriphenylphosphineHCID 137268EthynylpyridineHCID 5360545SodiumHCID 86673023HCID 86673023, compound

Product 1

HCID 86673036HCID 86673036, compoundYield 64.1%

Reagents, catalysts & solvents 3

HCID 83717Copper iodideCatalystHCID 178418476HCID 178418476, compoundCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
120 °C

Procedure

A solution of 7-bromo-2-isoquinolin-3-yl-chromen-4-one O-tert-butyl oxime (150 mg, 0.35 mmol), trans-dichlorobis(triphenylphosphine)palladium (22 mg, 0.035 mmol), copper iodide (13 mg, 0.071 mmol), triphenylphosphine (19 mg, 0.071 mmol) in dimethylformamide (3 ml) was degassed with argon for 10 min and then treated with triethylamine (74 μl, 0.53 mmol) and 2-ethynylpyridine (45 μl, 0.45 mmol). The solution was warmed to 120° C. under microwave irradiation (power max=80 W) for 1 hour and then poured onto a saturated aqueous solution of sodium hydrogenocarbonate, extracted with ethyl acetate, washed with water and brine, dried over sodium sulfate and purified by flash chromatography over silica gel (cyclohexane/ethyl acetate: 20-40%) to yield 2-isoquinolin-3-yl-7-(pyridin-2-yl-ethynyl)-chromen-4-one O-tert-butyl oxime (100 mg, 63%) as a yellow solid.

Workup

  1. extractionextracted with ethyl acetate
  2. washwashed with water and brine
  3. dry with materialdried over sodium sulfate
  4. custompurified by flash chromatography over silica gel (cyclohexane/ethyl acetate: 20-40%)

Sources & evidence

ORD record
ord-d073a75929794b2a952922be81893371
Source dataset
uspto-grants-2015_02
Patent number
US08962627B2

Reaction notes

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