2-Methyl-2-butanol → HCID 178526251, compound

HRID 636301Notes

Reaction equation

HRID 636301 reaction equation
Cl[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][N+:3]=1[O-:8].[NH2:9][CH2:10][CH2:11][CH2:12][OH:13].C([O-])(O)=O.[Na+].C(O)(CC)(C)C>C(Cl)Cl.CO.C(Cl)(Cl)Cl>[OH:13][CH2:12][CH2:11][CH2:10][NH:9][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][N+:3]=1[O-:8]

Participants

7

Reactant 4

HCID 64052-Methyl-2-butanolHCID 90863-Amino-1-propanolHCID 754652-Chloropyridine oxideHCID 516892Sodium Bicarbonate

Product 1

HCID 178526251HCID 178526251, compoundYield 93%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 21584188Chloroform methanolSolvent

Procedure

A mixture of 2-chloropyridine-N-oxide (16.6 g, 0.1 mole), 3-amino-1-propanol (15.3 mL, 0.2 mole), NaHCO3 (42 g, 0.5 mole), and tert-amyl alcohol (100 mL) was heated to reflux. After 21 hr, the reaction was cooled, diluted with CH2Cl2 (300 mL), and suction filtered to remove insoluble materials. The filtrate was concentrated and reconcentrated from toluene to leave a yellow oil. Silica gel chromatography ( 20% MeOH/CHCl3) gave the title compound (15.62 g, 93%) as a yellow solid: TLC (20% MeOH/CHCl3) Rf 0.48; 1H NMR (250, CDCl3) δ 8.07 (dd, J=6.6, 1.2 Hz, 1H), 7.34 (br t, 1H), 7.10-7.30 (m, 1H), 6.64 (dd, J=8.5, 1.4 Hz, 1H), 6.40-6.60 (m, 1H), 4.49 (br s, 1H), 3.65-3.90 (m, 2H), 3.35-3.60 (m, 2H), 1.75-2.00 (m, 2H); MS (ES) m/e 169 (M+H)+.

Workup

  1. temperaturewas heated to reflux
  2. temperaturethe reaction was cooled
  3. filtrationfiltered
  4. customto remove insoluble materials
  5. concentrationThe filtrate was concentrated
  6. customto leave a yellow oil

Sources & evidence

ORD record
ord-828c044d71f44d2091f0106625968040
Source dataset
uspto-grants-2001_02
Patent number
US06191304B1

Reaction notes

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