Polyoxygenated coumarins. Oxonium ylides en route to polyoxa- macrocyclic coumarins

DOI: 10.1016/S0040-4020(99)00291-4

Source and publish data:

Tetrahedron p. 6577 - 6584 (1999)

Update date:2022-08-30

Topics:

Authors:

Cenini, Sergio

Cravotto, Giancarlo

Giovenzana, Giovanni B.

Palmisano, Giovanni

Tollari, Stefano

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Article abstract of DOI:10.1016/S0040-4020(99)00291-4

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.

Full text of DOI:10.1016/S0040-4020(99)00291-4

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