Triethylamine → 2-(2-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxo-1-(pentan-3-yl)piperidin-3-yl)acetyl)hydrazinecarboxamide

HRID 931971Notes

Reaction equation

HRID 931971 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[N:12]([CH:21]([CH2:24][CH3:25])[CH2:22][CH3:23])[C:11](=[O:26])[C@:10]([CH2:28][C:29](O)=[O:30])([CH3:27])[CH2:9]2)[CH:5]=[CH:6][CH:7]=1.C1C=CC2N(O)N=NC=2C=1.C(N(CC)CC)C.Cl.[NH2:50][NH:51][C:52]([NH2:54])=[O:53]>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[N:12]([CH:21]([CH2:24][CH3:25])[CH2:22][CH3:23])[C:11](=[O:26])[C@:10]([CH2:28][C:29]([NH:50][NH:51][C:52]([NH2:54])=[O:53])=[O:30])([CH3:27])[CH2:9]2)[CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 11236Semicarbazide hydrochlorideHCID 757711-HydroxybenzotriazoleHCID 565911372-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxo-1-(pentan-3-yl)piperidin-3-yl)acetic acid

Product 1

HCID 679988332-(2-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxo-1-(pentan-3-yl)piperidin-3-yl)acetyl)hydrazinecarboxamide

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 320 mg (0.69 mmol) of 2-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxo-1-(pentan-3-yl)piperidin-3-yl)acetic acid (Example 71, Step F) and 921 mg (2.42 mmol) of HOBt in DMF (13 mL) was added 0.58 mL (4.15 mmol) of triethylamine. After stirring at room temperature for 40 min, added 270 mg (2.42 mmol) of semicarbazide hydrochloride. The resulting dark red solution was stirred at room temperature for 2.5 h, and then was concentrated under reduced pressure. Purification of the residue by reversed phase prep. HPLC (Sunfire™ Prep C18 OBD 10 μm column (Waters, Milford, Mass.), gradient elution of 40% MeCN in water to 90% MeCN in water over a 30 min period, where both solvents contain 0.1% TFA) provided the title compound as a light yellow solid.

Workup

  1. stirringThe resulting dark red solution was stirred at room temperature for 2.5 h
  2. concentrationwas concentrated under reduced pressure
  3. customPurification of the residue by reversed phase prep
  4. washHPLC (Sunfire™ Prep C18 OBD 10 μm column (Waters, Milford, Mass.), gradient elution of 40% MeCN in water to 90% MeCN in water over a 30 min period, where both solvents

Sources & evidence

ORD record
ord-a329aa87fe184331aee0a045a03ba2cc
Source dataset
uspto-grants-2016_03
Patent number
US09296736B2

Reaction notes

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