Fig. 5: Preliminary applications.

Reaction conditions: i) 3c (0.2 mmol), CH3MgBr (0.3 mmol.), THF, 0 °C; ii) 3c (0.3 mmol), Pd/C, H2, MeOH, r.t.; iii) 3u (0.2 mmol), NaBH4 (0.2 mmol), MeOH, 0 °C; iv) 3 u (0.2 mmol), TFA (0.2 mL), CH2Cl2, 0 °C; v) 3a (0.2 mmol), ethyl 2-bromoacetate (0.24 mmol), Cs2CO3 (0.3 mmol), CH3CN, r.t.; vi) 3u (0.2 mmol), ethyl 2-bromoacetate (0.24 mmol), Cs2CO3 (0.3 mmol), CH3CN, r.t. then reflux.