Ethanol → N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-beta-alanine

HRID 1934386Notes

Reaction equation

HRID 1934386 reaction equation
[Li+].[OH-].C([O:5][C:6](=[O:37])[CH2:7][C@@H:8]([C:35]#[CH:36])[NH:9][C:10]([C@@H:12]1[CH2:17][CH2:16][CH2:15][N:14]([C:18](=[O:34])/[CH:19]=[CH:20]/[CH:21]2[CH2:26][CH2:25][N:24]([C:27]([O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[O:28])[CH2:23][CH2:22]2)[CH2:13]1)=[O:11])C.CCO>O.O1CCCC1>[C:30]([O:29][C:27]([N:24]1[CH2:23][CH2:22][CH:21](/[CH:20]=[CH:19]/[C:18]([N:14]2[CH2:15][CH2:16][CH2:17][C@@H:12]([C:10]([NH:9][C@H:8]([C:35]#[CH:36])[CH2:7][C:6]([OH:37])=[O:5])=[O:11])[CH2:13]2)=[O:34])[CH2:26][CH2:25]1)=[O:28])([CH3:31])([CH3:33])[CH3:32]

Participants

6

Reactant 3

HCID 702EthanolHCID 3939Lithium HydroxideHCID 86758026N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-beta-alanine ethyl ester

Product 1

HCID 86758027N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-beta-alanineYield 97.4%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of LiOH (79 mg) in H2O (10 ml) was added to a solution of N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-β-alanine ethyl ester (1.34 g) in tetrahydrofuran (10 ml)-EtOH (10 ml) at 0° C. The reaction mixture was stirred for 3 hours at the same condition, and the solvent was evaporated in vacuo. The residue was resolved in ethyl acetate-water, and acidified with 10% aq. KHSO4. The whole was washed with water, brine, dried over MgSO4, and evaporated in vacuo to give N-[(R)-1-[3-(1-tert-butoxycarbonyl-4-piperidyl)-(E)-acryloyl]-3-piperidylcarbonyl]-3(S)-ethynyl-β-alanine (1.23 g).

Workup

  1. customthe solvent was evaporated in vacuo
  2. washThe whole was washed with water, brine
  3. dry with materialdried over MgSO4
  4. customevaporated in vacuo

Sources & evidence

ORD record
ord-83e48a54a7c54c558bd0d4435a9ab140
Source dataset
uspto-grants-2002_05
Patent number
US06384028B1

Reaction notes

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