Hydratropic acids, syntheses

Dang TP, Kagan HB (1971) TTie asynunetric synthesis of hydratropic acid and amino-acids by homogeneous hydrogenation. J Chem Soc D Chem Common 481 81... 

Dang, T. P., and H. B. Kagan The Asymmetric Synthesis of Hydratropic Acid and Amino Acids by Homogeneous Catalytic Hydrogenation. J. Chem. Soc. Chem. Comm. 1971, 481. 

Takaishi, N., H. Imai, C. A. Bertelo, and J. K. Stille Transition Metal Catalyzed Asymmetric Organic Syntheses via Polymer Bound Chiral Ligands. Synthesis of R Amino Acids and Hydratropic Acid by Hydrogenation. J. Amer. Chem. Soc. 98, 5400 (1976). 

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