Tributylvinyltin → 1-[1-(Tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-(5-vinyl-2-thiophenesulfonyl)-2-piperazinone

HRID 2186165Notes

Reaction equation

HRID 2186165 reaction equation
Br[C:2]1[S:6][C:5]([S:7]([N:10]2[CH2:15][CH2:14][N:13]([CH2:16][CH:17]3[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH2:18]3)[C:12](=[O:30])[CH2:11]2)(=[O:9])=[O:8])=[CH:4][CH:3]=1.[CH:31]([Sn](CCCC)(CCCC)CCCC)=[CH2:32].[Cl-].[Li+]>O1CCOCC1>[C:26]([O:25][C:23]([N:20]1[CH2:21][CH2:22][CH:17]([CH2:16][N:13]2[CH2:14][CH2:15][N:10]([S:7]([C:5]3[S:6][C:2]([CH:31]=[CH2:32])=[CH:3][CH:4]=3)(=[O:9])=[O:8])[CH2:11][C:12]2=[O:30])[CH2:18][CH2:19]1)=[O:24])([CH3:29])([CH3:28])[CH3:27]

Participants

5

Reactant 3

HCID 81998TributylvinyltinHCID 433294Lithium ChlorideHCID 234475704-(5-Bromo-2-thiophenesulfonyl)-1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-2-piperazinone

Product 1

HCID 234473631-[1-(Tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-(5-vinyl-2-thiophenesulfonyl)-2-piperazinoneYield 116.3%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A mixture of 4-(5-bromo-2-thiophenesulfonyl)-1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-2-piperazinone (200 mg), vinyltributyltin (365 mg), lithium chloride (50 mg), tetrakistriphenylphosphine palladium (50 mg) and dioxane (15 ml) was refluxedfor2hours. The reaction solutionwas concentrated, and the residue was purified with silica gel column chromatography (hexane:ethyl acetate=1:2) to give colorless solid of 1-[1-(tert-butoxycarbonyl)piperidin-4-ylmethyl]-4-(5-vinyl-2-thiophenesulfonyl)-2-piperazinone (209 mg).

Workup

  1. customThe reaction solutionwas concentrated, and the residue was purified with silica gel column chromatography (hexane:ethyl acetate=1:2)

Sources & evidence

ORD record
ord-6ae568638c5a4997b32c43b753e080f9
Source dataset
uspto-grants-2002_06
Patent number
US06403595B1

Reaction notes

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