title: Synthesis of Vinca Alkaloids and Related Compounds. 79. An Intriguing Retro Diels-Alder Reaction(1).
abstract: The dimerization products of criocerine (1) are different (2 or 3) depending on whether the reaction is carried out in acetic acid or trifluoroacetic acid. The highly strained product 3 rearranges spontaneously through a retro Diels-Alder reaction. All structures involved were thoroughly investigated by NMR spectroscopic methods.
authors.affiliation: Chemical Works of Gedeon Richter Ltd., Spectroscopic Research Division, H-1475 Budapest, POB. 27, Hungary, and Central Research Institute for Chemistry of the Hungarian Academy of Sciences, H-1525 Budapest, POB. 17, Hungary.
authors.forename: Csaba
authors.initials: C
authors.lastname: Szántay
authors.forename: István
authors.initials: I
authors.lastname: Moldvai
authors.forename: Gábor
authors.initials: G
authors.lastname: Tárkányi
authors.forename: Csaba
authors.initials: C
authors.lastname: Szántay