Tomoshige Kobayashi

TL;DR: In this article, the intervention of N-phosphinyl-1-azadiene intermediates is proposed on the basis of the independent synthesis of an Nphosphylphosphine-1azadienes and its conversion into a pyridine by the reaction with 1.

TL;DR: Several mesoionic compounds react with 2-tert-butylfulvene derivatives to form [4π + 6π] and/or cycloadducts as discussed by the authors, which undergo further fragmentation, elimination, or isomerization under the reaction conditions to give a variety of products including several condensed heterocycles which are isoelectronic with azulene.

TL;DR: In this article, a plausible mechanism for the rearrangement is presented, and the reaction of 2-benzoyl-2-azabicyclo[2.2.1] with trifluoroacetic acid in heated benzene afforded a Diels-Alder cycloadduct with N-phenylmaleimide.

TL;DR: All of the 3-(benzylthio)thieno[3,4-b]indolizine derivatives showed significant high-field shifts for the 5- and 6-proton signals compared with those of the3-methylthio derivatives in the (1)H-NMR spectra and exhibited a definite absorption band near 425 nm in their UV spectra, indicating an intramolecular arene-arene interaction between the thieno [3,

TL;DR: In the X-ray analyses of some compounds, however, the presence of both the gauche and the anti conformers at the sulfide spacer were confirmed, and the appearance of a characteristic absorption band near 425 nm attributable to the arene-arene interaction was confirmed.