1-(Prop-2-yn-1-yl)pyrrolidine → methyl (E)-[2-methyl-4-[3(2-methylbenzo[b]furan-5-yl)-3-[4-[3-(pyrrolidin-1-yl)propynyl]phenyl]allyloxy]phenoxy]acetate

HRID 1039468Notes

Reaction equation

HRID 1039468 reaction equation
[CH2:1]([N:4]1[CH2:8][CH2:7][CH2:6][CH2:5]1)[C:2]#[CH:3].I[C:10]1[CH:15]=[CH:14][C:13](/[C:16](/[C:33]2[CH:42]=[CH:41][C:36]3[O:37][C:38]([CH3:40])=[CH:39][C:35]=3[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>[CH3:32][C:22]1[CH:21]=[C:20]([O:19][CH2:18]/[CH:17]=[C:16](/[C:33]2[CH:42]=[CH:41][C:36]3[O:37][C:38]([CH3:40])=[CH:39][C:35]=3[CH:34]=2)\[C:13]2[CH:14]=[CH:15][C:10]([C:3]#[C:2][CH2:1][N:4]3[CH2:8][CH2:7][CH2:6][CH2:5]3)=[CH:11][CH:12]=2)[CH:31]=[CH:30][C:23]=1[O:24][CH2:25][C:26]([O:28][CH3:29])=[O:27]

Participants

8

Reactant 2

HCID 2996161-(Prop-2-yn-1-yl)pyrrolidineHCID 86629296methyl (Z)-[4-[3-(4-iodophenyl)-3-(2-methylbenzo[b]furan-5-yl)allyloxy]-2-methylphenoxy]acetate

Product 1

HCID 131728883methyl (E)-[2-methyl-4-[3(2-methylbenzo[b]furan-5-yl)-3-[4-[3-(pyrrolidin-1-yl)propynyl]phenyl]allyloxy]phenoxy]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

N-Propargylpyrrolidine (250 mg, 2.29 mmol) was added under nitrogen atmosphere to a degassed solution of the above ester (400 mg, 0.68 mmol) in a mixture of tetrahydrofuran (6 mL) and triethylamine (6 mL) The solution was cooled, tetrakis(triphenylphosphine)palladium (71 mg, 0.061 mmol) and copper(I) iodide (21 mg, 0.11 mmol) were added. The reaction mixture was stirred at ambient temperature for 96 h, diluted with benzene (100 mL), decanted and evaporated in vacuo. The residue was purified by column chromatography (silica gel Fluka 60, benzene/ethyl acetate 1:0-0:1) yielding methyl (E)-[2-methyl-4-[3(2-methylbenzo[b]furan-5-yl)-3-[4-[3-(pyrrolidin-1-yl)propynyl]phenyl]allyloxy]phenoxy]acetate.

Workup

  1. temperaturewas cooled
  2. customdecanted
  3. customevaporated in vacuo
  4. customThe residue was purified by column chromatography (silica gel Fluka 60, benzene/ethyl acetate 1:0-0:1)

Sources & evidence

ORD record
ord-704627f074c748ac973946eafd4b7440
Source dataset
uspto-grants-2013_10
Patent number
US08551993B2

Reaction notes

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