Hydrochloric Acid → {4-[4-(2-Aminoethoxy)phenyl]butyl}carbamic acid benzyl ester hydrochloride

HRID 217933Notes

Reaction equation

HRID 217933 reaction equation
[CH2:1]([O:8][C:9](=[O:32])[NH:10][CH2:11][CH2:12][CH2:13][CH2:14][C:15]1[CH:20]=[CH:19][C:18]([O:21][CH2:22][CH2:23][NH:24]C(OC(C)(C)C)=O)=[CH:17][CH:16]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[ClH:33].CCOCC>CO.C1COCC1>[ClH:33].[CH2:1]([O:8][C:9](=[O:32])[NH:10][CH2:11][CH2:12][CH2:13][CH2:14][C:15]1[CH:20]=[CH:19][C:18]([O:21][CH2:22][CH2:23][NH2:24])=[CH:17][CH:16]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 3283Diethyl EtherHCID 67364654{4-[4-(2-tert-Butoxycarbonylaminoethoxy)phenyl]butyl}carbamic acid benzyl ester

Product 1

HCID 66849606{4-[4-(2-Aminoethoxy)phenyl]butyl}carbamic acid benzyl ester hydrochloride

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

{4-[4-(2-tert-Butoxycarbonylaminoethoxy)phenyl]butyl}carbamic acid benzyl ester 1 (11.0 g, 24.9 mmol) was dissolved in methanol (110 mL) and THF (20 mL). 12N Hydrochloric acid (40 mL) was added dropwise, and the reaction was allowed to stir. After 1.5 h, ether (200 mL) was added, and the reaction was suction filtered to collect a white solid. The solid was washed with ether, air dried, and dried under vacuum. This afforded 7.6 g, (82%) of 7 as a white solid. 1H NMR (300 MHz, CD3OD) δ 1.39 (br s, 11H), 1.52 (m, 2H).

Workup

  1. filtrationfiltered
  2. customto collect a white solid
  3. washThe solid was washed with ether, air
  4. customdried
  5. customdried under vacuum

Sources & evidence

ORD record
ord-7d1d4873825446b8b46cfc12a79799a7
Source dataset
uspto-grants-2012_06
Patent number
US08198286B2

Reaction notes

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