Lawesson's reagent → Atb-346

HRID 18632

Reaction equation

[CH3:1][O:2][C:3]1[CH:12]=[CH:11][C:10]2[C:5](=[CH:6][CH:7]=[C:8]([CH:13]([CH3:26])[C:14]([O:16][C:17]3[CH:22]=[CH:21][C:20]([C:23](=O)[NH2:24])=[CH:19][CH:18]=3)=[O:15])[CH:9]=2)[CH:4]=1.COC1C=CC(P2(SP(C3C=CC(OC)=CC=3)(=S)S2)=[S:36])=CC=1>C1C=CC=CC=1>[CH3:1][O:2][C:3]1[CH:12]=[CH:11][C:10]2[C:5](=[CH:6][CH:7]=[C:8]([CH:13]([CH3:26])[C:14]([O:16][C:17]3[CH:22]=[CH:21][C:20]([C:23](=[S:36])[NH2:24])=[CH:19][CH:18]=3)=[O:15])[CH:9]=2)[CH:4]=1

Participants

Conditions

Temperature: 60 °C

Procedure

4-Carbamoylphenyl 2-(2-methoxynaphthalen-6-yl)-propanoate, 5 (1.80 g, 4.34 mmol) and Lawesson reagent (1.75 g, 4.34 mmol) were dissolved in 130 ml of anhydrous benzene. The reaction was warmed to 60° C. and stirred for 4 h. The solvent was removed under reduced pressure; the crude residue was purified by silica gel column (dichloromethane/methyl alcohol 9.75:0.25) to furnish 2.9 g of crude compound 6. The obtained compound was purified by a silica gel open column and eluted with CH2Cl2/MeOH (9.5/0.5)) giving the pure compound 6 (970 mg, 61% yield).

Workup

customThe solvent was removed under reduced pressure
customthe crude residue was purified by silica gel column (dichloromethane/methyl alcohol 9.75:0.25)
customto furnish 2.9 g of crude compound 6
customThe obtained compound was purified by a silica gel open column
washeluted with CH2Cl2/MeOH (9.5/0.5))

Sources & evidence

ORD record: ord-d78045a97bc94da69a2c6f2ecb99a3ea
Source dataset: uspto-grants-2010_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07741359B2

Linked notes

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