Lawesson's reagent → HCID 9825008, compound

HRID 381871Notes

Reaction equation

HRID 381871 reaction equation
[CH2:1]([N:8]1[C:13](=O)[C:12]([C:15]2[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=2)=[C:11]([C:22]2[CH:27]=[CH:26][C:25]([S:28]([CH3:31])(=[O:30])=[O:29])=[CH:24][CH:23]=2)[CH:10]=[N:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.COC1C=CC(P2(SP(C3C=CC(OC)=CC=3)(=S)S2)=[S:41])=CC=1>C1(C)C=CC=CC=1>[CH2:1]([N:8]1[C:13](=[S:41])[C:12]([C:15]2[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=2)=[C:11]([C:22]2[CH:27]=[CH:26][C:25]([S:28]([CH3:31])(=[O:30])=[O:29])=[CH:24][CH:23]=2)[CH:10]=[N:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 87949Lawesson's reagentHCID 9889122HCID 9889122, compound

Product 1

HCID 9825008HCID 9825008, compoundYield 88%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A mixture of 2-benzyl-4-(4-fluorophenyl)-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone, prepared according to the method of Example 5, (109 mg, 0.25 mmol) and Lawesson's reagent (202 mg, 0.5 mmol) in 15 mL of toluene was stirred at reflux for 48 hours. The mixture was concentrated in vacuo and the residue was chromatographed (silica gel, ethyl acetate) to provide the title compound (yield: 100 mg, 88%). mp 88-90° C. 1H NMR (300 MHz, CDCl3) δ 3.04 (s, 3H), 6.05 (s, 2H), 6.96 (m, 2H), 7.08 (m, 2H), 7.26 (m, 2H), 7.37 (m, 3H), 7.61 (m, 2H), 7.84 (d, J=9 Hz, 2H), 8.13 (s, 1H). MS (DCI/NH3) m/z 451 (M+H)+.

Workup

  1. customprepared
  2. temperatureat reflux for 48 hours
  3. concentrationThe mixture was concentrated in vacuo
  4. customthe residue was chromatographed (silica gel, ethyl acetate)

Sources & evidence

ORD record
ord-b99608df867f4b8ea1413dc4d218a2d1
Source dataset
uspto-grants-2001_10
Patent number
US06307047B1

Reaction notes

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