33458-79-6Relevant articles and documents
Total syntheses of chelidonine and norchelidonine via an enamide-benzyne-[2+2] cycloaddition cascade
Ma, Zhi-Xiong,Feltenberger, John B.,Hsung, Richard P.
supporting information; experimental part, p. 2742 - 2745 (2012/08/07)
Total syntheses of chelidonine and norchelidonine featuring an enamide-benzyne-[2 + 2] cycloaddition initiated cascade is described. The cascade includes a pericyclic ring-opening and intramolecular Diels-Alder reaction.
PREPARATION AND USE OF NITROGEN- OR SULFUR CONTAINING HETEROCYCLES IN ORGANIC SYNTHESIS
Oppolzer, Wolfgang
, p. 1615 - 1630 (2007/10/02)
The utility of intramolecular cycloadditions of ortho-quinodimethanes for the synthesis of complex polycyclic molecules is illustrated: 1) by the stereoselective synthesis of the natural alkaloid (+/-)-chelidonine starting from a benzocyclobutene; 2) by t