Hyman, Julius

REX E. LIDOV, HENRY BLUESTONE, and S. BARNEY SOLO WAY, Julius Hyman Company, Denver, Colo., and CLYDE W. KEARNS, University of Illinois, Urbana, III. 

During the past 30 months two new compounds, aldrin and dieldrin, possessing great usefulness as insect toxicants, have been devised, synthesized, and studied in the laboratories of Julius Hyman Company. Both compounds are completely impervious... 

A. A. DANISH and REX E. LIDOV Julius Hyman Company, Denver, Co/o. 

Compound 118. A material recrystallized from methanol and melting at 100-102° is satisfactory. A sample of crystalline Compound 118 may be obtained from Julius Hyman Company, Rocky Mountain Arsenal, Denver, Colo. 

The indene-derived group. At the Velsicol Chemical Corporation in Chicago in 19 3, Dr. Julius Hyman was seeking new uses for the cyclopentadiene which was a by-product of U.S. synthetic rubber production and was already used by Velsicol for the manufacture of resins and varnishes by the Diels-Alder reaction (6). A literature search revealed Straus s 1930 synthesis of hexachlorocyclopentadiene ( hex ) and, since chlorinated dienes are frequently rather inert, Hyman was interested to determine if hex would participate in the Diels-Alder reaction, either with itself or with cyclopentadiene. 

Hymans F. and Hellborn A.V. 1927. Der neuzeitliche Aujzug mil Triebscheibenantrieb, Julius Springer, Berhn. 

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