Scheme 4. Synthesis of Pyrazol-1-yl-propanamides 29a–29fa.
aReagents and conditions: (a) 1. SOCl2 in THF, −10 to 0 °C. 2. Et3N in THF, −10 to 0 °C and then heat to 50 °C, 2–3 h, and (b) NaH in THF, 0 °C to rt.
aReagents and conditions: (a) 1. SOCl2 in THF, −10 to 0 °C. 2. Et3N in THF, −10 to 0 °C and then heat to 50 °C, 2–3 h, and (b) NaH in THF, 0 °C to rt.