反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
CONDITIONS
反应条件
- 温度
- 105 °C
PROCEDURE
实验过程
4-(5-Chloro-2-methyl-2,3-dihydro-furo[2,3-c]pyridin-2-yl)-piperidine-1-carboxylic acid tert-butyl ester (100 mg) is added to a mixture of 1-(methylsulfonyl)piperazine hydrochloride (70 mg), Pd2(dba)3 (65 mg), Xantphos (123 mg), and potassium tert-butylate (75 mg) in toluene (4 mL) under an argon atmosphere. The reaction mixture is stirred in an oil bath at 105° C. over night. After cooling to room temperature water is added and the mixture is extracted with ethyl acetate. The combined extracts are concentrated in vacuo and the residue is chromatographed on silica gel (cyclohexane/ethyl acetate 50:50→0:100) to give the title compound. LC (method 1): tR=1.03 min; Mass spectrum (ESI+): m/z=481 [M+H]+.
WORKUP
后处理
- additionis added
- extractionthe mixture is extracted with ethyl acetate
- concentrationThe combined extracts are concentrated in vacuo
- customthe residue is chromatographed on silica gel (cyclohexane/ethyl acetate 50:50→0:100)