Diisopropylethylamine → Methyl 4-methyl-3-[(quinolin-3-yl)ethynyl]benzoate

HRID 570977Notes

Reaction equation

HRID 570977 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([CH:10]=[CH:11][C:12]=1[CH3:13])[C:6]([O:8][CH3:9])=[O:7])#[CH:2].I[C:15]1[CH:16]=[N:17][C:18]2[C:23]([CH:24]=1)=[CH:22][CH:21]=[CH:20][CH:19]=2.C(N(C(C)C)CC)(C)C>CN(C=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[CH3:13][C:12]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[C:1]#[C:2][C:15]1[CH:16]=[N:17][C:18]2[C:23]([CH:24]=1)=[CH:22][CH:21]=[CH:20][CH:19]=2

Participants

7

Reactant 3

HCID 81531DiisopropylethylamineHCID 112538363-IodoquinolineHCID 53403239Methyl 3-ethynyl-4-methylbenzoate

Product 1

HCID 70557798Methyl 4-methyl-3-[(quinolin-3-yl)ethynyl]benzoate

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Procedure

A mixture of methyl 3-ethynyl-4-methylbenzoate (0.341 g, 2 mmol), 3-iodoquinoline (0.5 g, 2 mmol), Pd(PPh3)4 (0.11 g, 0.01 mmol), CuI (0.179 g, 0.1 mmol) and diisopropylethylamine (0.5 ml, 3 mmol) in DMF (15 ml) was stirred at ambient temperature for 12 hrs under an atmosphere of nitrogen. The reaction mixture was concentrated and the crude product was purified by flash chromatography on silica gel (elution with 10% ethyl acetate in n-hexane) to provide methyl 4-methyl-3-[(quinolin-3-yl)ethynyl]benzoate.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. customthe crude product was purified by flash chromatography on silica gel (elution with 10% ethyl acetate in n-hexane)

Sources & evidence

ORD record
ord-c25067c74360417cac4e3a4455e64501
Source dataset
uspto-grants-2015_05
Patent number
US09024021B2

Reaction notes

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