Triphenylphosphine → (5R,6S)-3-[1-allylpyrrolidin-3-yl)-6-[(1R)-1-hydroxyethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid

HRID 1029693Notes

Reaction equation

HRID 1029693 reaction equation
C(O[C:5]([N:7]1[CH2:11][CH2:10][CH:9]([C:12]2[CH2:18][C@H:17]3[N:14]([C:15](=[O:22])[C@@H:16]3[C@H:19]([OH:21])[CH3:20])[C:13]=2[C:23]([O:25]CC=C)=[O:24])[CH2:8]1)=O)C=C.[C:29]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C[CH:30]=1.C(OCC)(=O)CCCCC.[Na]>O1CCCC1.C(O)C.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>[CH2:5]([N:7]1[CH2:11][CH2:10][CH:9]([C:12]2[CH2:18][C@H:17]3[N:14]([C:15](=[O:22])[C@@H:16]3[C@H:19]([OH:21])[CH3:20])[C:13]=2[C:23]([OH:25])=[O:24])[CH2:8]1)[CH:29]=[CH2:30]

Participants

7

Reactant 3

HCID 11776TriphenylphosphineHCID 15117368allyl (5R,6S)-3-(1-allyloxycarbonylpyrrolidin-3-yl)-6-[(1R)-1-hydroxyethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylateHCID 53628222Sodium 2-ethyl hexanoate

Product 1

HCID 15117483(5R,6S)-3-[1-allylpyrrolidin-3-yl)-6-[(1R)-1-hydroxyethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acidYield 267.5%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of allyl (5R,6S)-3-(1-allyloxycarbonylpyrrolidin-3-yl)-6-[(1R)-1-hydroxyethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate (1.24 g) in a mixture of tetrahydrofuran (20 ml) and ethanol (5 ml) were added triphenylphosphine (0.16 g), sodium 2-ethyl hexanoate (1.1 g), and tetrakis(triphenylphosphine)palladium(0) (0.37 g). After stirring at ambient temperature for 1 hour, the reaction mixture was washed with dichloromethane, and evaporated in vacuo. The residue was chromatographed on nonionic adsorption resin "Dialon HP-20" eluting with a mixture of water and acetonitrile (95:5, V/V). The fractions containing the desired compound were collected and lyophilized to give (5R,6S)-3-[1-allylpyrrolidin-3-yl)-6-[(1R)-1-hydroxyethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid (500 mg).

Workup

  1. washthe reaction mixture was washed with dichloromethane
  2. customevaporated in vacuo
  3. customThe residue was chromatographed on nonionic adsorption resin "Dialon
  4. wash" eluting with a mixture of water and acetonitrile (95:5, V/V)
  5. additionThe fractions containing the desired compound
  6. customwere collected

Sources & evidence

ORD record
ord-a092a3902e304d97b9fe9a97c53d22b5
Source dataset
uspto-grants-1992_04
Patent number
US05102877

Reaction notes

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