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

Yıl 1988, Cilt: 34 Sayı: 01.02, 48 - 52, 01.01.1899

Tahsin Uyar

https://doi.org/10.1501/Commub_0000000486

Öz

The reactions of 2,2-dimethyl-l,3-indandione (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.

Anahtar Kelimeler

The reactions, When I was reacted, On the contrary

Kaynakça

• Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering