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Heck Reaction: Stereo Selective Synthesis of Trisubstituted Olefins: Useful Intermediates for Anthraquinone Carboxylic Acid Derivatives |
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| Authors: | A Rama Devi S Rajaram |
| Institution: | Indian Institute Of Chemical Technology , Hyderabad, 500 007, India |
| Abstract: | Palladium catalyzed arylation of dialkyl itaconate in presence of Pd(OAc)2/PPh3 as a catalyst, afforded trisubstituted olefins stereo selectively. These alkenes are useful intermediates for the synthesis of anthraquinone carboxylic acid derivatives. A new coumarin is also synthesized using this protocol. |
| Keywords: | Trialkyl phosphites (I) Triphenylphosphine (III) Dialkylhydrogen phosphites (II) 2-Azido-p-benzoquinonediimine (IV) 2 5-Diazido-p-benzoquinonediimine (V) Imino-phosphoranes (VI VII VIII IX XIV XV and XVI) Phosphoramidates (XVIII) UV irradiation |