Water → HCID 21413266, compound

HRID 437235Notes

Reaction equation

HRID 437235 reaction equation
[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[CH2:10][CH2:11][N:12]1[CH2:17][CH2:16][CH:15]([NH:18][C:19](=[O:26])[C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[CH2:14][CH2:13]1)([O-])=O.O>C(O)C.Cl>[NH2:1][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[CH2:10][CH2:11][N:12]1[CH2:13][CH2:14][CH:15]([NH:18][C:19](=[O:26])[C:20]2[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=2)[CH2:16][CH2:17]1

Participants

5

Reactant 2

HCID 962WaterHCID 21413254HCID 21413254, compound

Product 1

HCID 21413266HCID 21413266, compoundYield 42.4%

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidSolventHCID 702EthanolSolvent

Procedure

A solution of 1-[2-(o-nitrophenyl)ethyl]-4-benzamidopiperidine (4.25 g.) in absolute ethanol (150 ml.) was added over 50 minutes to stirred stannous chloride (10.82 g.) in concentrated hydrochloric acid (12 ml.).and water (7.5 ml.) at 60°-70° C. After addition, the mixture was stirred at this temperature for 4 hours before cooling and evaporating the ethanol. Continuous extraction into chloroform of the neutralised (with 2 N sodium hydroxide solution) aqueous fraction gave the title compound (1.65 g.). The aqueous layer after extraction was made alkaline with 2 N sodium hydroxide solution and extracted with more chloroform to give a further batch of the title compound (2.36 g.). The total product was crystallised from ethanolic hydrogen chloride and ether to give the hydrochloride of the title compound (2.75 g.), m.p. 263.8° C. (Found: C, 60.3; H, 7.0; N, 10.5. C20H25N3O. 2HCl requires C, 60.6; H, 6.9; N, 10.60%).

Workup

  1. customat 60°-70° C
  2. additionAfter addition
  3. temperaturebefore cooling
  4. customevaporating the ethanol
  5. extractionContinuous extraction into chloroform of the neutralised (with 2 N sodium hydroxide solution) aqueous fraction

Sources & evidence

ORD record
ord-b96c24dbdedb4312a3d0a4560b2c343c
Source dataset
uspto-grants-1977_06
Patent number
US04029801

Reaction notes

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