Tetrahedron Letters p. 6231 - 6234 (1992)
Update date:2022-08-04
Topics:
Jacobi
Rajeswari
Dihydropyrromethenone 29, a potential precursor for the synthesis of Phytochrome (8), Phycocyanin (9) and Phycoerythrin (10), has been prepared in homochiral form from pyrrolohydrazide 27 by a sequence involving F-induced 5-exo-dig cyclization to afford enamide 28, followed by photochemical 3,5-sigmatropic rearrangement.
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