
Tetrahedron p. 6577 - 6584 (1999)
Update date:2022-08-30
Topics:
Cenini, Sergio
Cravotto, Giancarlo
Giovenzana, Giovanni B.
Palmisano, Giovanni
Tollari, Stefano
The overall sequence of Rh(II)-catalysed carbenoid generation, oxonium ylide formation and subsequent sigmatropic rearrangement utilising 3-diazo- 2H-1-benzopyran-2,4(3H)-dione in cyclic ethers as solvents has been satisfactorily used to achieve the synthesis of several medium- to large- membered polyoxa macrocycles embodying the coumarin subunit.
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