THE WITTIG REACTION WITH 2,2-DIMETHYL-l,3-INDANDIONE

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Communications Faculty of Sciences University Ankara Series B Chemistry and Chemical Engineering
Volume:34 Issue:01.02
THE WITTIG REACTION WITH 2,2-DIMETHYL-l,3-INDANDIONE

THE WITTIG REACTION WITH 2,2-DIMETHYL-l,3-INDANDIONE

Pages : 48-52

View : 30 | Download : 8

Publication Date : 1899-01-01

Article Type : Research Paper

Abstract :The reactions of 2,2-dimethyl-l,3-indandione insert ignore into journalissuearticles values(I); with several Wittig reagents have been studied. When I was reacted with one or two equimolar amounts of active phosphoranes, such as methylene and ethylidenetriphenylphosphorane, bismethylene- and bisethylidene deriva- tives of the indandione were obtained in fairly good yields. The reactions of I with resonance- stabilized phosphoranes such as ethoxycarbony!methylene-2—butylidene— and carboethoxy— 2-methyl-2-propylidenetriphenylphosphorane gave monoalkylideneindanones in moderate or in pocr yields at severe conditions. On the contrary, the reaction of I with carboethoxymethyle- netriphenylphosphorane in sealed tube gave the bisalkylidene derivative of the indandione at 160°C.
Keywords : The reactions, When I was reacted, On the contrary

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