Ethynylpyridine → methyl (E)-[4-[3-(4-chlorophenyl)-3-[4-(pyridin-2-ylethynyl)phenyl]allyloxy]-2-methylphenoxy]acetate

HRID 1039449Notes

Reaction equation

HRID 1039449 reaction equation
[C:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][N:4]=1)#[CH:2].[Cl:9][C:10]1[CH:15]=[CH:14][C:13](/[C:16](/[C:33]2[CH:38]=[CH:37][C:36](I)=[CH:35][CH:34]=2)=[CH:17]/[CH2:18][O:19][C:20]2[CH:31]=[CH:30][C:23]([O:24][CH2:25][C:26]([O:28][CH3:29])=[O:27])=[C:22]([CH3:32])[CH:21]=2)=[CH:12][CH:11]=1>O1CCCC1.C(N(CC)CC)C.C1C=CC=CC=1.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>[Cl:9][C:10]1[CH:11]=[CH:12][C:13](/[C:16](/[C:33]2[CH:34]=[CH:35][C:36]([C:2]#[C:1][C:3]3[CH:8]=[CH:7][CH:6]=[CH:5][N:4]=3)=[CH:37][CH:38]=2)=[CH:17]/[CH2:18][O:19][C:20]2[CH:31]=[CH:30][C:23]([O:24][CH2:25][C:26]([O:28][CH3:29])=[O:27])=[C:22]([CH3:32])[CH:21]=2)=[CH:14][CH:15]=1

Participants

8

Reactant 2

HCID 137268EthynylpyridineHCID 86629280methyl (Z)-[4-[3-(4-chlorophenyl)-3-(4-iodophenyl)allyloxy]-2-methylphenoxy]acetate

Product 1

HCID 86629279methyl (E)-[4-[3-(4-chlorophenyl)-3-[4-(pyridin-2-ylethynyl)phenyl]allyloxy]-2-methylphenoxy]acetate

Reagents, catalysts & solvents 5

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 241BenzeneSolventHCID 8028TetrahydrofuranSolventHCID 8471TriethylamineSolvent

Procedure

2-Ethynylpyridine (250 mg, 2.42 mmol) was added under nitrogen atmosphere to a degassed solution of methyl (Z)-[4-[3-(4-chlorophenyl)-3-(4-iodophenyl)allyloxy]-2-methylphenoxy]-acetate (500 mg, 0.91 mmol; example 7) in a mixture of tetrahydrofuran (8 mL) and triethylamine (8 mL) The solution was cooled, tetrakis(triphenylphosphine)palladium (96 mg, 0.083 mmol) and copper(I) iodide (27.6 mg, 0.145 mmol) were added. The reaction mixture was stirred at ambient temperature for 72 h, diluted with benzene (100 mL) and washed with water (2×50 mL). The organic solution was dried with anhydrous potassium carbonate and subsequently evaporated in vacuo. The residue was purified by column chromatography (silica gel Fluka 60, benzene-chloroform/ether 2:1) yielding methyl (E)-[4-[3-(4-chlorophenyl)-3-[4-(pyridin-2-ylethynyl)phenyl]allyloxy]-2-methylphenoxy]acetate.

Workup

  1. temperaturewas cooled
  2. washwashed with water (2×50 mL)
  3. dry with materialThe organic solution was dried with anhydrous potassium carbonate
  4. customsubsequently evaporated in vacuo
  5. customThe residue was purified by column chromatography (silica gel Fluka 60, benzene-chloroform/ether 2:1)

Sources & evidence

ORD record
ord-3ea715b839ee4cb08bbd1a51fbb8fa86
Source dataset
uspto-grants-2013_10
Patent number
US08551993B2

Reaction notes

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