ChemInform Abstract: Aminomethylation of Enals Through Carbene and Acid Cooperative Catalysis: Concise Access to β2‐Amino Acids. Issue 34 (August 2015) - Xu, Jianfeng; Chen, Xingkuan; Wang, Ming; Zheng, Pengcheng; Song, Bao‐An; Chi, Yonggui Robin