反应详情

To a solution of 2-chloro-6-methylbenzaldehyde (107 mg) and 3,4-diamino-N-(3,4-dimethylphenyl)-benzamide (Example 5-1, step 6) (160 mg) in DMSO (1.5 mL) was added Yb(OTf)3 (80 mg). The solution was stirred at room temperature for 18 h then an additional 40 mg of Yb(OTf)3 was added the mixture was stirred at 70° C. for 24 h. The mixture was partioned between water and EtOAc. The aqueous layer was extracted with EtOAc. The combined organic layers were dried, filtered and concentrated. The residue was purified by flash chromatography using hexanes/ethyl acetate (5:1) and the product was isolated as a foam. MS (m/z) 390 (M+1), retention time=1.66 min, Method 10.

1. stirringwas stirred at 70° C. for 24 h
2. extractionThe aqueous layer was extracted with EtOAc
3. customThe combined organic layers were dried
4. filtrationfiltered
5. concentrationconcentrated
6. customThe residue was purified by flash chromatography
7. customthe product was isolated as a foam