1: 49 percent / sodium hydride / tetrahydrofuran / 3 h / Ambient temperature 2: 1) triphenylphosphine, iodine, 2) triethylamine / 1) MeCN, room temperature, 3.5 h, 2) MeCN, reflux, 24 h View Scheme

sodium methylate in methanol a) room temperature, 25 min, b) 57 deg C, 25 min;

sodium methylate

(i) 2-methoxybenzoic acid, Et3N, THF, (ii) /BRN= 3587203/; Multistep reaction;

sodium hydride in tetrahydrofuran 3 h; Ambient temperature;