Methanesulfonyl chloride → ethyl (2E)-3-(6-{(tert-butoxycarbonyl)[(3R)-1-(2,3-dihydro-1-benzofuran-5-ylmethyl)-3-pyrrolidinyl]amino}-3-pyridyl)acrylate

HRID 2376014Notes

Reaction equation

HRID 2376014 reaction equation
[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH2:10]O)=[CH:9][C:4]=2[CH2:3][CH2:2]1.CS(Cl)(=O)=O.Cl.Cl.[C:19]([O:23][C:24]([N:26]([C@@H:40]1[CH2:44][CH2:43][NH:42][CH2:41]1)[C:27]1[N:32]=[CH:31][C:30](/[CH:33]=[CH:34]/[C:35]([O:37][CH2:38][CH3:39])=[O:36])=[CH:29][CH:28]=1)=[O:25])([CH3:22])([CH3:21])[CH3:20]>CCN(CC)CC.C1COCC1>[C:19]([O:23][C:24]([N:26]([C@@H:40]1[CH2:44][CH2:43][N:42]([CH2:10][C:8]2[CH:7]=[CH:6][C:5]3[O:1][CH2:2][CH2:3][C:4]=3[CH:9]=2)[CH2:41]1)[C:27]1[N:32]=[CH:31][C:30](/[CH:33]=[CH:34]/[C:35]([O:37][CH2:38][CH3:39])=[O:36])=[CH:29][CH:28]=1)=[O:25])([CH3:20])([CH3:21])[CH3:22]

Participants

6

Reactant 3

HCID 31297Methanesulfonyl chlorideHCID 2776158(2,3-Dihydro-1-benzofuran-5-yl)methanolHCID 86603639ethyl (2E)-3-(6-{(tert-butoxycarbonyl)[(3R)-3-pyrrolidinyl]amino}-3-pyridyl)acrylate dihydrochloride

Product 1

HCID 86603641ethyl (2E)-3-(6-{(tert-butoxycarbonyl)[(3R)-1-(2,3-dihydro-1-benzofuran-5-ylmethyl)-3-pyrrolidinyl]amino}-3-pyridyl)acrylateYield 47.2%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8471TriethylamineSolvent2×

Procedure

To a mixture of 2,3-dihydro-1-benzofuran-5-ylmethanol (95.1 mg), Et3N (0.120 mL), and THF (3 mL) was added methanesulfonyl chloride (0.053 mL) at 4° C. The reaction mixture was stirred for 3 hours, and added ethyl (2E)-3-(6-{(tert-butoxycarbonyl)[(3R)-3-pyrrolidinyl]amino}-3-pyridyl)acrylate dihydrochloride (250 mg) and Et3N (0.281 mL). After stirring for 2 hours at 60° C., the resulting mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine, dried over MgSO4, filtered, and evaporated in vacuo. The residue was purified by column chromatography on silica gel to give ethyl (2E)-3-(6-{(tert-butoxycarbonyl)[(3R)-1-(2,3-dihydro-1-benzofuran-5-ylmethyl)-3-pyrrolidinyl]amino}-3-pyridyl)acrylate (134 mg)

Workup

  1. stirringAfter stirring for 2 hours at 60° C.
  2. customthe resulting mixture was partitioned between ethyl acetate and water
  3. washThe organic layer was washed with brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. customevaporated in vacuo
  7. customThe residue was purified by column chromatography on silica gel

Sources & evidence

ORD record
ord-2221c6721a1140568027ea5a086aacf0
Source dataset
uspto-grants-2008_12
Patent number
US07465731B2

Reaction notes

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