Lawesson's reagent → Ammonia

HRID 30487

Reaction equation

HRID 30487 reaction equation
[CH:1]([N:4]1[CH2:9][CH2:8][N:7]([C:10]([C:12]2[CH:13]=[N:14][C:15]([CH2:18][N:19]3[CH2:24][CH2:23][CH2:22][CH2:21][CH2:20]3)=[CH:16][CH:17]=2)=O)[CH2:6][CH2:5]1)([CH3:3])[CH3:2].COC1C=CC(P2(SP(C3C=CC(OC)=CC=3)(=S)S2)=[S:34])=CC=1>C1COCC1>[NH3:4].[CH:1]([N:4]1[CH2:9][CH2:8][N:7]([C:10]([C:12]2[CH:13]=[N:14][C:15]([CH2:18][N:19]3[CH2:24][CH2:23][CH2:22][CH2:21][CH2:20]3)=[CH:16][CH:17]=2)=[S:34])[CH2:6][CH2:5]1)([CH3:3])[CH3:2]

Participants

5

Reactant 2

HCID 87949Lawesson's reagentHCID 11522780(4-Isopropyl-piperazin-1-yl)-(6-piperidin-1-ylmethyl-pyridin-3-yl)-methanone

Product 2

HCID 222AmmoniaYield 1%HCID 11609917(4-Isopropyl-piperazin-1-yl)-(6-piperidin-1-ylmethylpyridin-3-yl)-methanethione

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of (4-isopropyl-piperazin-1-yl)-(6-piperidin-1-ylmethyl-pyridin-3-yl)-methanone (Example 1, 80 mg, 0.24 mmol) and Lawesson's reagent (210 mg, 0.50 mmol) in THF was heated at reflux for 48 h. The reaction was cooled to rt and the solvent was removed in vacuo. Chromatography of the residue (SiO2: 1-6% 2 M NH3 in MeOH/DCM) gave the title compound as an oil. MS (ESI): exact mass calcd. for C19H30N4S, 346.22; m/z found, 347.5 [M+H]+.

Workup

  1. temperatureat reflux for 48 h
  2. customthe solvent was removed in vacuo

Sources & evidence

ORD record
ord-40d0cb1381bc469c859c24aedd943567
Source dataset
uspto-grants-2008_09
Patent number
US07423147B2

Linked notes

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