反应详情

A solution of 0.20 g (0.50 mmol) of 1-{3-[(E)-2-(4-chloro-phenyl)-vinyl]-phenyl}-3,5-diethyl-1H-pyrazole-4-carboxylic acid (intermediate 1) and 0.21 g (0.50 mmol) of HATU were dissolved in 8 ml of DMF at RT. While stirring, 0.16 g=0.22 ml (1.60 mmol) of Et3N were added drop by drop. After 30 min, a solution of 0.076 g (0.50 mmol) of 2-[1,4]diazepan-1-yl-ethanol in 2 ml of DMF were added drop by drop and stirring was continued for 20 hours at RT. The reaction mixture was poured into crashed ice and extracted twice with EtOAc; the organic phases were washed with water, dried over magnesium sulfate, filtered and evaporated. The residue was purified by flash column chromatography (CH2Cl2/MeOH 1:0-9:1) to afford the title compound as colorless oil. MS: 507.4 (MH+, 1 Cl).

1. stirringstirring
2. waitwas continued for 20 hours at RT
3. additionThe reaction mixture was poured
4. extractionextracted twice with EtOAc
5. washthe organic phases were washed with water
6. dry with materialdried over magnesium sulfate
7. filtrationfiltered
8. customevaporated
9. customThe residue was purified by flash column chromatography (CH2Cl2/MeOH 1:0-9:1)