Triethylamine → HCID 54192391, compound

HRID 1683875Notes

Reaction equation

HRID 1683875 reaction equation
[CH2:1]([O:8][C:9]([N:11]1[CH2:15][CH2:14][CH2:13][C@@H:12]1[CH2:16][C:17]1[C:25]2[C:20](=[CH:21][CH:22]=[C:23](Br)[CH:24]=2)[NH:19][CH:18]=1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH:27]([S:29]([CH2:32][CH3:33])(=[O:31])=[O:30])=[CH2:28].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.C(N(CC)CC)C>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(#N)C>[CH2:1]([O:8][C:9]([N:11]1[CH2:15][CH2:14][CH2:13][C@@H:12]1[CH2:16][C:17]1[C:25]2[C:20](=[CH:21][CH:22]=[C:23]([CH:28]=[CH:27][S:29]([CH2:32][CH3:33])(=[O:31])=[O:30])[CH:24]=2)[NH:19][CH:18]=1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 74680(Ethylsulfonyl)etheneHCID 80271Tri-o-tolylphosphineHCID 22859561(R)-Benzyl 2-((5-bromo-1H-indol-3-yl)methyl)pyrrolidine-1-carboxylate

Product 1

HCID 54192391HCID 54192391, compoundYield 72.2%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 6342AcetonitrileSolvent

Procedure

A stirred mixture of 3-(N-benzyloxycarbonyl-2(R)-pyrrolidinylmethyl)-5-bromo-1H-indole (Preparation 2; 0.43 g, 1.04 mmol), ethyl vinyl sulphone (0.17 g, 1.4 mmol), tri-o-tolylphosphine (91 mg), palladium(II) acetate (16 mg), triethylamine (0.31 ml) and acetonitrile (4 ml), under nitrogen, was heated under reflux for 18 hours, allowed to cool, then evaporated under reduced pressure. The residue was purified by column chromatography on silica gel, eluting with a dichloromethane to dichloromethane:ethanol (99:1) gradient, to afford the title compound as a foam (0.34 g). Rf 0.80 (SS 2). [α]D25 -50° (c=0.1, CH3OH). Found: C,65.16; H,6.17; N,5.97. C25H28N2O4S; 0.125 CH2Cl2 requires C,65.15; H,6.15; N,6.05%. δ(CDCl3)--mixture of rotamers: 1.42(3H,t), 1.70-1.88(4H,m), 2.78(1H,m), 3.05-3.48(5H,m), 4.20(1H,m), 5.16-5.28(2H, br q), 5.30(0.25H,s,CH2Cl2), 6.64-7.82(1H,m), 6.96 and 7.05(1H, 2×s), 7.30-7.45(7H,m), 7.55-7.80 and 8.00(2H, m and s), 8.32(1H,br s).

Workup

  1. temperatureunder nitrogen, was heated
  2. temperatureunder reflux for 18 hours
  3. temperatureto cool
  4. customevaporated under reduced pressure
  5. customThe residue was purified by column chromatography on silica gel
  6. washeluting with a dichloromethane to dichloromethane:ethanol (99:1) gradient

Sources & evidence

ORD record
ord-9bfe18264b5c4f6bae3013a54e8d4f10
Source dataset
uspto-grants-1997_06
Patent number
US05639779

Reaction notes

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