from: The Chemistry of Organic Medicinal Products by G. L. Jenkins & W. H. Hartung 1941, page 356.


The 1 after 'platinum catalyst.' refers to the following footnote:

U.S. Patent 1,956,950; C.A., 28 4027 (1934); D. R. P. 548, 459; C. A., 26 3623 (1923); British, 360,334; C. A., 27, 566 (1933); U. S. Patent, 1,962,476; C. A., 28, 4834 (1934). Neuberg, Hirsch, and Heinz, Biochem. Z. 115, 282 (1921); 128, 610 (1922).



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