Tartaric Acid–Zinc Nitrate as an Efficient Brønsted Acid-Assisted Lewis Acid Catalyst for the Mannich Reaction

• Hao Dong, Qing Liu, Yuanyu Tian, Yingyun Qiao

• Journal of Chemical Research, September 2018, SAGE Publications
• DOI: 10.3184/174751918x15355426661373