Title of article
Bargellini condensation of coumarins. Expeditious route to o-carboxyvinylphenoxyisobutyric acids and application to the synthesi of sesquiterpenes helianane, heliannuol A and heliannuol C
Author/Authors
Bidyut Biswas، نويسنده , , Prabir K. Sen، نويسنده , , Ramanathapuram V. Venkateswaran، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2007
Pages
11
From page
12026
To page
12036
Abstract
The direct Bargellini condensation of coumarins involving reaction with chloroform and acetone in the presence of aqueous sodium hydroxide furnished o-carboxyvinylphenoxyisobutyric acids in good yields. The utility of this new useful protocol was demonstrated by the transformation of the three diesters 9b, 9f and 9g to the sesquiterpenes helianane 4, heliannuol A 2 and heliannuol C 3, respectively.
Keywords
Bargellini condensation , o-Carboxyvinylphenoxyisobutyric acids , Heliannuols , Helianane , Ring-closing metathesis
Journal title
Tetrahedron
Serial Year
2007
Journal title
Tetrahedron
Record number
1093482
Link To Document