Sulfuric Acid → 1-Hydroxy-2,2,6,6-tetramethyl-4-acetamidopiperidinium Bisulfate

HRID 1383248Notes

Reaction equation

HRID 1383248 reaction equation
[S:1](=[O:5])(=[O:4])([OH:3])[OH:2].[OH:6][N:7]1[C:12]([CH3:14])([CH3:13])[CH2:11][CH:10]([NH:15][C:16](=[O:18])[CH3:17])[CH2:9][C:8]1([CH3:20])[CH3:19]>C(O)(C)C>[S:1](=[O:3])(=[O:2])([OH:5])[O-:4].[OH:6][NH+:7]1[C:12]([CH3:13])([CH3:14])[CH2:11][CH:10]([NH:15][C:16](=[O:18])[CH3:17])[CH2:9][C:8]1([CH3:20])[CH3:19]

Participants

4

Reactant 2

HCID 1118Sulfuric AcidHCID 579904N-(1-hydroxy-2,2,6,6-tetramethylpiperidin-4-yl)acetamide

Product 1

HCID 221829801-Hydroxy-2,2,6,6-tetramethyl-4-acetamidopiperidinium Bisulfate

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Procedure

2.6 ml of concentrated sulfuric acid is added dropwise to a solution of 10.0 g (46.9 mmol) 1-oxyl-2,2,6,6-tetramethyl-4-acetamidopiperidine in 50 ml isopropanol. After 48 hrs the resulting white solid is collected by filtration, washed with isopropanol and dried under vacuum, mp 198° C.

Workup

  1. filtrationAfter 48 hrs the resulting white solid is collected by filtration
  2. washwashed with isopropanol
  3. customdried under vacuum, mp 198° C.

Sources & evidence

ORD record
ord-7e68e9a59c854daea9ef038cde659c0e
Source dataset
uspto-grants-2001_07
Patent number
US06254724B1

Reaction notes

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