Hydrochloric Acid → 4-[(S)-2-Amino-5-(tert-butyl-diphenyl-silanyloxy)-pentanoyl]-piperazine-1-carboxylic acid butyl ester hydrochloride

HRID 1970491Notes

Reaction equation

HRID 1970491 reaction equation
[CH2:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14](=[O:45])[C@@H:15]([NH:37]C(OC(C)(C)C)=O)[CH2:16][CH2:17][CH2:18][O:19][Si:20]([C:33]([CH3:36])([CH3:35])[CH3:34])([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[CH2:10][CH2:9]1)=[O:7])[CH2:2][CH2:3][CH3:4].[ClH:46]>O1CCOCC1>[ClH:46].[CH2:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][N:11]([C:14](=[O:45])[C@@H:15]([NH2:37])[CH2:16][CH2:17][CH2:18][O:19][Si:20]([C:33]([CH3:36])([CH3:35])[CH3:34])([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[CH2:12][CH2:13]1)=[O:7])[CH2:2][CH2:3][CH3:4]

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 668543564-[(S)-2-tert-Butoxycarbonylamino-5-(tert-butyl-diphenyl-silanyloxy)-pentanoyl]-piperazine-1-carboxylic acid butyl ester

Product 1

HCID 668559754-[(S)-2-Amino-5-(tert-butyl-diphenyl-silanyloxy)-pentanoyl]-piperazine-1-carboxylic acid butyl ester hydrochloride

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A solution of 900 mg 4-[(S)-2-tert-Butoxycarbonylamino-5-(tert-butyl-diphenyl-silanyloxy)-pentanoyl]-piperazine-1-carboxylic acid butyl ester in 5 ml dioxane and 5 ml HCl (4 M in dioxane) was stirred for 3 h at RT. After this time the reaction mixture was neutralized with (Polystyryl-methyl)trimethylammonium bicarbonate, the suspension filtered, washed with ethyl acetate and the wash solutions evaporated to give the crude product. Yield: 760 mg.

Workup

  1. filtrationthe suspension filtered
  2. washwashed with ethyl acetate
  3. customthe wash solutions evaporated

Sources & evidence

ORD record
ord-4807f8260b304812a2ec2145df9d1663
Source dataset
uspto-grants-2013_04
Patent number
US08426420B2

Reaction notes

Loading…