Methylamine → 2-Isopropyl-4-(N-methyl)amino-methyl thiazole

HRID 53920Notes

Reaction equation

HRID 53920 reaction equation
Cl.Cl[CH2:3][C:4]1[N:5]=[C:6]([CH:9]([CH3:11])[CH3:10])[S:7][CH:8]=1.[CH3:12][NH2:13]>O>[CH:9]([C:6]1[S:7][CH:8]=[C:4]([CH2:3][NH:13][CH3:12])[N:5]=1)([CH3:11])[CH3:10]

Participants

4

Reactant 2

HCID 6329MethylamineHCID 187588464-(Chloromethyl)-2-(propan-2-yl)-1,3-thiazole--hydrogen chloride (1/1)

Product 1

HCID 107496872-Isopropyl-4-(N-methyl)amino-methyl thiazoleYield 55%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A solution of 40 g of 4-(chloromethyl)-2-isopropylthiazole hydrochloride in 100 ml of water was added dropwise with stirring to 400 ml of 40% aqueous methylamine. The resulting solution was stirred for 1 h, then concentrated in vacuo. The residue was taken up in chloroform, dried over Na2SO4, and concentrated in vacuo. Purification of the residue by silica gel chromatography using 10% methanol in chloroform provided 21.35 g (55%) of the desired compound. 1H NMR (DMSO-d6) δ 1.34 (d, J=7 Hz, 6 H), 2.56 (s, 3 H), 3.30 (heptet, J=7 Hz, 1 H), 4.16 (s, 2 H), 7.63 (s, 1 H). Mass spectrum: (M+H)+ =171.

Workup

  1. concentrationconcentrated in vacuo
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated in vacuo
  4. customPurification of the residue by silica gel chromatography

Sources & evidence

ORD record
ord-5719a89c5ebc469f95c58c4d87481c91
Source dataset
uspto-grants-1997_04
Patent number
US05621109

Reaction notes

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