Reaktion #411405

Reaktionsgleichung

ethyl 4-[[(5,6-dihydro-5,5-dimethyl-8-(4-methylphenyl)-2-naphthalenyl)carbonyl]amino]-benzoate

Compound 35

ethyl 4-[[(5,6-dihydro-5,5-dimethyl-8-(4-methylphenyl)-2-naphthalenyl)carbonyl]amino]-benzoate

2,4-bis(4-methoxyphenyl)- 1,3-dithia-2,4-diphosphetane-2,4-disulfide

Lawesson's Reagent

→

title compound

Ethyl -4[[(5,6-dihydro-5,5-dimethyl-8-(4-methylphenyl)-2-naphthalenyl)thiocarbonyl]amino]-benzoate

Lösungsmittel

benzene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Filtrationthe mixture was filtered
2. 2
   Einengenthe filtrate concentrated under reduced pressure

Vorschrift

A solution of 110.0 mg (0.25 mmol) ethyl 4-[[(5,6-dihydro-5,5-dimethyl-8-(4-methylphenyl)-2-naphthalenyl)carbonyl]amino]-benzoate (Compound 35) and 121.0 mg (0.30 mmol) of [2,4-bis(4-methoxyphenyl)- 1,3-dithia-2,4-diphosphetane-2,4-disulfide] (Lawesson's Reagent) in 12.0 ml of benzene was refluxed overnight. Upon cooling to room temperature, the mixture was filtered and the filtrate concentrated under reduced pressure. The title compound was isolated by column chromatography (10 to 25% EtOAc/hexanes) as a yellow solid. 1H NMR (CDCl3): δ 8.92 (1H, s), 8.06 (2H, t, J=8.5 Hz), 7.88-7.70 (3H, m), 7.42 (2H, d, J=8.1 Hz), 7.18 (4H, m), 6.03 (1H, t, J=4.7 Hz), 4.37 (2H, q, J=7.1 Hz), 2.38 (3H, s), 2,36 (2H, d, J=4.7 Hz), 1.56 (3H, t; J=7.1 Hz), 1.35 (6H, s).

Quelle