The Isomerization of Dimethyl Maleate by Hydrogen Bromide and by Hydrogen Chloride
- 1 January 1939
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 14 (1) , 22-28
- https://doi.org/10.1246/bcsj.14.22
Abstract
(1) No isomerization of isostilbene to stilbene occurs with hydrogen chloride in the presence of either reduced nickel or oxygen. (2) Hydrogen bromide and hydrogen chloride cause the isomerization of dimethyl maleate to the fumarate either in absence of solvents or in carbon tetrachloride solution. (3) Oxygen has no effect on the isomerization of dimethyl maleate by hydrogen halides. (4) The isomerization of dimethyl maleate by hydrogen halides belongs to another type of catalyzed cis-trans isomerization apparently distinct from that of isostilbene by hydrogen bromide and oxygen. (5) A hypothesis has been proposed concerning the mechanism of the isomerization of dimethyl maleate caused by hydrogen halides. In conclusion, the author wishes to express his sincere thanks to Prof. Y. Urushibara for his kind guidance and encouragements throughout the work and to Prof. S. Mizushima for valuable advices. Thanks are also due to the Japan Society for the Promotion of Scientific Research (Nippon Gakujutsu Shinko-Kwai) and to Ozi Seisi Company for grants.This publication has 4 references indexed in Scilit:
- The Isomerization of Isostilbene to Stilbene by Hydrogen Bro-mide in the Presence of Oxygen and of Ferromagnetic MetalsBulletin of the Chemical Society of Japan, 1938
- Quantum Mechanical Resonance and Internal RotationBulletin of the Chemical Society of Japan, 1938
- The Effect of Oxygen and Reduced Nickel on the Catalytic Action of Hydrogen Bromide in the Isomerization of Isostilbene into StilbeneBulletin of the Chemical Society of Japan, 1937
- CATALYTIC TRANSMUTATION OF MALEIC ACID INTO FUMARIC ACID1Journal of the American Chemical Society, 1925