4-Methylmorpholine → Tert-butyl hex-5-enoate

HRID 965165

Reaction equation

HRID 965165 reaction equation
[C:1]([O:5][C:6](=[O:15])[CH2:7][C@@H:8]([CH2:12][CH:13]=[CH2:14])C(O)=O)([CH3:4])([CH3:3])[CH3:2].N[C@H]1CC2=CN(C3C2=CC=CC=3)CCOCCNC1=O.C1C=CC2N(O)N=NC=2C=1.CN1CCOCC1.CCN=C=NCCCN(C)C>CN(C=O)C.CN(C1C=CN=CC=1)C.CCOC(C)=O>[C:1]([O:5][C:6](=[O:15])[CH2:7][CH2:8][CH2:12][CH:13]=[CH2:14])([CH3:4])([CH3:3])[CH3:2]

Participants

9

Reactant 5

HCID 79724-MethylmorpholineHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 10560578HCID 10560578, compoundHCID 676943419-(S)-amino-4-oxa-1,7-diaza-tricyclo[9.6.1.012,17]octadeca-11(18),12,14,16-tetraen-8-one

Product 1

HCID 15047738Tert-butyl hex-5-enoate

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 2-(R)-allyl-succinic acid 4-t-butyl ester (5 g, 0.00234 mol), 9-(S)-amino-4-oxa-1,7-diaza-tricyclo[9.6.1.012,17 ]octadeca-11(18),12,14,16-tetraen-8-one (6,38 g, 0.00234mol) in 50 mL DMF added HOBT (3.47 g, 0.026 mol), DMAP (80 mg), N-methylmorpholine (2.84 g, 0.028 mol), and EDCI (6.69 g, 0.035 mol). The mixture was stirred at room temperature overnight. The reaction mixture was diluted with EtOAc (300 mL) and washed with brine (2×100 mL), saturated NaHCO3 (2×100 mL) and brine (1×100 mL), and dried (MgSO4). Removal of the solvents gave 9 g of crude product. Column chromatographic purification (50% EtOAc/CH2Cl2) gave 7.5 g of pure (3R,9S)-3-(8-oxo-4-oxa-1,7-diaza-tricyclo[9.6.1.012,17 ]octadeca-11(18)12,14,16-tetraen-9-yl carbamoyl)-hex-5-enoic acid t-butyl ester, MS: 469(M+).

Workup

  1. washwashed with brine (2×100 mL), saturated NaHCO3 (2×100 mL) and brine (1×100 mL)
  2. dry with materialdried (MgSO4)
  3. customRemoval of the solvents
  4. customgave 9 g of crude product
  5. customColumn chromatographic purification (50% EtOAc/CH2Cl2)

Sources & evidence

ORD record
ord-08f2c05b10264987a882e8a0deec87c6
Source dataset
uspto-grants-1998_06
Patent number
US05773428

Linked notes

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