Реакция #660432

Уравнение реакции

1,2,3,4-tetrahydronaphthalen-1-ol

triphenylphosphine

2-(1-{[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazole-4-carboxylic acid

→

1,2,3,4-Tetrahydronaphthalen-1-yl 2-(1-{[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazole-4-carboxylate

Растворители

tetrahydrofuran

Условия реакции

Обработка

1. 1
   workup.WAITAfter 2 hours
2. 2
   Другоеthe solvent is removed under reduced pressure
3. 3
   Другоеthe residue is purified chromatographically

Методика

At room temperature, 1,2,3,4-tetrahydronaphthalen-1-ol (155 mg) and triphenylphosphine (758 mg) are added to a solution of 2-(1-{[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazole-4-carboxylic acid (III-4, 380 mg) in tetrahydrofuran (2.5 ml). The mixture is stirred at 0 C under argon for 5 minutes, and diethyldiazene 1,2-dicarboxylate (383 mg) is then added dropwise. The reaction mixture is slowly warmed to room temperature. After 2 hours, the solvent is removed under reduced pressure and the residue is purified chromatographically. This gives 1,2,3,4-tetrahydronaphthalen-1-yl 2-(1-{[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazole-4-carboxylate (196 mg, 39%).

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