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Bargellini condensation of coumarins. Expeditious synthesis of o-carboxyvinylphenoxyisobutyric acids |
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| Authors: | Prabir K Sen Ramanathapuram V Venkateswaran |
| Institution: | a Chemistry Department, Haldia Government College, Midnapore, West Bengal, India b Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India |
| Abstract: | Condensation of coumarins with chloroform and acetone in the presence of a base furnished o-carboxyvinylphenoxyisobutyric acids in good yields. The diacid 7a was transformed in a few high yielding steps to the marine sesquiterpene helianane underscoring the importance of this new protocol. |
| Keywords: | Coumarins Bargellini condensation α-Carboxyvinylphenoxyisobutyric acids Helianane |
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