Propargyl bromide → 2-(3-Ethynyl-8-methyl-quinolin-6-yloxy)-N-(2-methoxy-1-methyl-1-prop-2-ynyloxymethyl-ethyl)-2-methylsulfanyl-acetamide

HRID 1962867Notes

Reaction equation

HRID 1962867 reaction equation
[C:1]([C:3]1[CH:4]=[N:5][C:6]2[C:11]([CH:12]=1)=[CH:10][C:9]([O:13][CH:14]([S:25][CH3:26])[C:15]([NH:17][C:18]([CH2:22][O:23][CH3:24])([CH3:21])[CH2:19][OH:20])=[O:16])=[CH:8][C:7]=2[CH3:27])#[CH:2].[CH2:28](Br)[C:29]#[CH:30].[H-].[Na+]>C1COCC1>[C:1]([C:3]1[CH:4]=[N:5][C:6]2[C:11]([CH:12]=1)=[CH:10][C:9]([O:13][CH:14]([S:25][CH3:26])[C:15]([NH:17][C:18]([CH3:21])([CH2:19][O:20][CH2:30][C:29]#[CH:28])[CH2:22][O:23][CH3:24])=[O:16])=[CH:8][C:7]=2[CH3:27])#[CH:2]

Participants

5

Reactant 3

HCID 7842Propargyl bromide2×HCID 24758Sodium hydrideHCID 595653242-(3-ethynyl-8-methyl-quinolin-6-yloxy)-N-(2-hydroxy-1-methoxymethyl-1-methyl-ethyl)-2-methylsulfanyl-acetamide

Product 1

HCID 866472522-(3-Ethynyl-8-methyl-quinolin-6-yloxy)-N-(2-methoxy-1-methyl-1-prop-2-ynyloxymethyl-ethyl)-2-methylsulfanyl-acetamideYield 50.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
55 °C

Procedure

To a solution of 2-(3-ethynyl-8-methyl-quinolin-6-yloxy)-N-(2-hydroxy-1-methoxymethyl-1-methyl-ethyl)-2-methylsulfanyl-acetamide (120 mg) in dry THF (10 ml) NaH (27 mg, 60% in oil) was added at room temperature under a nitrogen atmosphere. After 30 minute propargyl bromide (115 mg) was added to the reaction mixture. After stirring during 5 h one equivalent of NaH and one equivalent of propargyl bromide were added. The mixture was stirred during 4 h at 55° C., then quenched with water and diluted with ethyl acetate. The water phase was extracted twice with ethyl acetate and the combined organic phases dried over sodium sulfate, filtered and evaporated. The crude residue was purified by column chromatography (cyclohexane/ethyl acetate, 3:2) to give 2-(3-Ethynyl-8-methyl-quinolin-6-yloxy)-N-(2-methoxy-1-methyl-1-prop-2-ynyloxymethyl-ethyl)-2-methylsulfanyl-acetamide (66 mg) as a light brown oil as a mixture of diastereoisomers.

Workup

  1. additionwere added
  2. customquenched with water
  3. additiondiluted with ethyl acetate
  4. extractionThe water phase was extracted twice with ethyl acetate
  5. dry with materialthe combined organic phases dried over sodium sulfate
  6. filtrationfiltered
  7. customevaporated
  8. customThe crude residue was purified by column chromatography (cyclohexane/ethyl acetate, 3:2)

Sources & evidence

ORD record
ord-f3415ea93afd471cabb04fefe347490c
Source dataset
uspto-grants-2013_04
Patent number
US08415272B2

Reaction notes

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