An efficient method is described for the first time reductive aza-Claisen rearrangement of 1-(N-allylamino) anthraquinones to 1-amino-2-(prop-2?-enyl)anthraquinones using zinc powder in 1-methylimidazolium tetrafluoroborate ([Hmim] BF4) as an ionic liquid good excellent yields. Extending this on 1-(N-propargylamino)anthraquinones causes production 1,2,3,4-tetrahydronaphtho[2,3-h]quinoline-7,12-...

Empirical valence bond (EVB) surfaces have been constructed for 2-pyridone-2hydroxypyridine proton transfer and for the Claisen rearrangement of allyl vinyl ether at the MP2/6-311þG(d,p) level of theory. A distributed Gaussian approach is used to approximate the interaction matrix elements. Parameters for the distributed Gaussians are determined by fitting to energy, gradient and Hessian data o...