Synthesis of Spirobarbiturate Piperidin-2-one Derivatives via Cascade Aza-Michael/Michael Cyclization Reaction
Xuehua Liu, Chuanchuan Wang, Xinlu Wang, Zhiwei Ma, Lei Meng, Degang Ding, Juntao Liu, Yajing Chen
Chinese Journal of Organic Chemistry . 2021, (11): 4450 -4458 .  DOI: 10.6023/cjoc202105045