1: (3S,6S)-4,7-bis(4-methoxybenzyl)-[1,1-2H]-6-isopropyl-4,7-diazaspiro[2.5]octane-5,8-dione With hydrogenchloride 24 h; Heating; 2: methanol With thionyl chloride Heating; Further stages. Title compound not separated from byproducts.;
参考文献
Organic and Biomolecular Chemistry, , vol. 1, # 14 p. 2531 - 2542