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1-Hydroxybenzotriazole → 1-[[[4-(Hydroxymethyl)phenyl]carbonyl]amino]cyclohexanecarboxylic acid phenylmethyl ester

HRID 73857
Notes
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Reaction equation

HRID 73857 reaction equation
Cl.C(N=C=NCCCN(C)C)C.[OH:13][CH2:14][C:15]1[CH:23]=[CH:22][C:18]([C:19]([OH:21])=O)=[CH:17][CH:16]=1.[C:24]1([CH2:30][O:31][C:32]([C:34]2([NH2:40])[CH2:39][CH2:38][CH2:37][CH2:36][CH2:35]2)=[O:33])[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.ON1C2C=CC=CC=2N=N1>C(Cl)Cl>[C:24]1([CH2:30][O:31][C:32]([C:34]2([NH:40][C:19]([C:18]3[CH:17]=[CH:16][C:15]([CH2:14][OH:13])=[CH:23][CH:22]=3)=[O:21])[CH2:35][CH2:36][CH2:37][CH2:38][CH2:39]2)=[O:33])[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 763604-(Hydroxymethyl)benzoic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 15176238Benzyl 1-aminocyclohexanecarboxylate

Product 1

HCID 576728131-[[[4-(Hydroxymethyl)phenyl]carbonyl]amino]cyclohexanecarboxylic acid phenylmethyl esterYield 56.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Under ice-cooling, 6.94 g (36 mmol) of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride was added to a solution of 5 g (33 mmol) of 4-(hydroxymethyl)benzoic acid, 7.7 g (33 mmol) of 1-aminocyclohexanecarboxylic acid phenylmethyl ester and 5.29 g (35 mmol) of 1-hydroxybenzotriazole in methylene chloride. After the mixture was stirred at room temperature overnight, the reaction solvent was distilled off under reduced pressure. Water was added to the residue and the mixture was extracted with ethyl acetate twice. The obtained organic layer was washed with a 10% aqueous potassium hydrogensulfate solution, a saturated aqueous sodium hydrogencarbonate solution and then saturated brine, and it was dried with anhydrous sodium sulfate. The obtained residue was purified by silica gel column chromatography to obtain 6.83 g (56%) of the title compound.

Workup

  1. temperatureUnder ice-cooling
  2. distillationthe reaction solvent was distilled off under reduced pressure
  3. additionWater was added to the residue
  4. extractionthe mixture was extracted with ethyl acetate twice
  5. washThe obtained organic layer was washed with a 10% aqueous potassium hydrogensulfate solution
  6. dry with materiala saturated aqueous sodium hydrogencarbonate solution and then saturated brine, and it was dried with anhydrous sodium sulfate
  7. customThe obtained residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-92dbecd53a6e429c800a829b622cad5b
Source dataset
uspto-grants-2014_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08829209B2

Reaction notes

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