N-Methylpiperidine → HCID 67639445, compound

HRID 1900202Notes

Reaction equation

HRID 1900202 reaction equation
CN1CCCCC1.[CH:8]([O:11][C:12]([NH:14][C@H:15]([C:20]([OH:22])=O)[C@H:16]([CH2:18][CH3:19])[CH3:17])=[O:13])([CH3:10])[CH3:9].ClC(OCC(C)C)=O.[C:31]([C:33]1[CH:38]=[CH:37][C:36]([NH:39][C:40](=[O:44])[C@@H:41]([CH3:43])[NH2:42])=[CH:35][CH:34]=1)#[N:32]>C(Cl)Cl.O>[CH:8]([O:11][C:12]([NH:14][C@H:15]([C:20]([NH:42][C@@H:41]([C:40]([NH:39][C:36]1[CH:37]=[CH:38][C:33]([C:31]#[N:32])=[CH:34][CH:35]=1)=[O:44])[CH3:43])=[O:22])[C@H:16]([CH2:18][CH3:19])[CH3:17])=[O:13])([CH3:9])[CH3:10]

Participants

7

Reactant 4

HCID 12291N-MethylpiperidineHCID 62365Isobutyl chloroformateHCID 22866861HCID 22866861, compoundHCID 54270626HCID 54270626, compound

Product 1

HCID 67639445HCID 67639445, compoundYield 49.1%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
-20 °C

Procedure

0.26 g of N-methylpiperidine was added to a solution containing 0.57 g of N-isopropoxycarbonyl-L-isoleucine dissolved in 60 ml of methylene chloride, at -20° C. After the mixture was stirred for 10 minutes at the same temperature, 0.36 g of isobutyl chloroformate was added to the mixture, and stirred for 1 hour at -20° C. 0.5 g of N1 -(4-cyanophenyl)-D-alaninamide was added to this mixture at -60° C., and then the reaction mixture was allowed to sit and warm naturally to room temperature while being stirred, and was stirred for 20 hours at room temperature. Water was subsequently added to the reaction mixture. After the methylene chloride layer was washed successively with a 5% aqueous solution of sodium bicarbonate and water, the organic layer was dried over anhydrous sodium sulfate and the methylene chloride was removed under reduced pressure. The residue was purified by column chromatography on silica gel, thus obtaining 0.5 g of the desired product in the form of white powder (yield: 49%).

Workup

  1. additionwas added to the mixture
  2. temperaturewarm naturally to room temperature
  3. stirringwhile being stirred
  4. stirringwas stirred for 20 hours at room temperature
  5. washAfter the methylene chloride layer was washed successively with a 5% aqueous solution of sodium bicarbonate and water
  6. dry with materialthe organic layer was dried over anhydrous sodium sulfate
  7. customthe methylene chloride was removed under reduced pressure
  8. customThe residue was purified by column chromatography on silica gel

Sources & evidence

ORD record
ord-13896bf5578447d98201323a952f90bf
Source dataset
uspto-grants-1996_11
Patent number
US05574064

Reaction notes

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