REACTIONS OF PHTHALAZINIUM-2-(UNSUBSTITUTED METHANIDE) AND PHTHALAZINIUM-2-DICYANOMETHANIDE 1,3-DIPOLES WITH ALKENE AND ALKYNE DIPOLAROPHILES - STEREOCHEMISTRY AND SECONDARY REACTIONS - SUBSTITUTED PYRROLO[2,1-A]PHTHALAZINES
Rn. Butler et al., REACTIONS OF PHTHALAZINIUM-2-(UNSUBSTITUTED METHANIDE) AND PHTHALAZINIUM-2-DICYANOMETHANIDE 1,3-DIPOLES WITH ALKENE AND ALKYNE DIPOLAROPHILES - STEREOCHEMISTRY AND SECONDARY REACTIONS - SUBSTITUTED PYRROLO[2,1-A]PHTHALAZINES, Journal of chemical research. Synopses, (9), 1996, pp. 418-419
Phthalazinium-2-methanide 1.3-dipoles display stereospecific cycloaddi
tions with alkene dipolarophiles; the products may vary from pure endo
to pure exo adducts or mixtures of both, and the cycloadducts from bo
th alkenes and alkynes may undergo further in situ oxidations, dehydro
cyanations or H-tautomerisations.