1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU)-Promoted Nucleophilic Addition of Two Molecules of Nitroalkanes to Diazo Compounds: Synthesis of Highly Functionalized Hydrazones and Tetrahydropyridazines
Xiaoyong Zhang, Lili Yu, Junfang Gao, Yue Gong, Yulong Zhao
Chinese Journal of Organic Chemistry . 2022, (11): 3704 -3713 .  DOI: 10.6023/cjoc202204033