1: AgNO3 / diethyl ether / 1.) 0 deg C, 40 min; 2.) 4.5 d, r. t. 2: KOCH3, urea / methanol / 0.17 h / Ambient temperature View Scheme

silver nitrate in diethyl ether 1.) 0 deg C, 40 min; 2.) 4.5 d, r. t.; Yield given. Yields of byproduct given;