1. Knoevenagel, E. Ber. 1898, 31, 2596-2619. Emil Knoevenagel (1865-1921) was born in Hannover, Germany. He studied at Göttingen under Victor Meyer and Gattermann, receiving a Ph.D. in 1889. He became a full professor at Heidelberg in 1900. When WWI broke out in 1914, Knoevenagel was one of the first to enlist and rose to the rank of staff officer. After the war, he returned to his academic work until his sudden death during an appendectomy.
2. Jones, G. Org. React. 1967, 15, 204-599. (Review).
3. Cantello, B. C. C.; Cawthornre, M. A.; Cottam, G. P.; Duff, P. T.; Haigh, D.; Hindley, R. M.; Lister, C. A.; Smith, S. A.; Thurlby, P. L. J. Med. Chem. 1994, 37, 3977-3985.
4. Paquette, L. A.; Kern, B. E.; Mendez-Andino, J. Tetrahedron Lett. 1999, 40, 4129-4132.
5. Tietze, L. F.; Zhou, Y. Angew. Chem. Int. Ed. 1999, 38, 2045-2047.