Lewis Acid-Catalyzed Formal [2π+2σ] Cycloaddition of Bicyclobutanes with Quinoxalin-2(1H)-ones: Access to Quinoxaline-Fused Aza-Bicyclo[2.1.1]hexanes.
Sign Up to like & getrecommendations! Published in 2024 at "Organic letters"
DOI: 10.1021/acs.orglett.4c01775
Abstract: An efficient synthesis of quinoxaline-fused aza-bicyclo[2.1.1]hexanes bearing multiple quaternary carbon centers via the intermolecular [2π+2σ] cycloaddition of bicyclo[1.1.0]butanes and quinoxalin-2(1H)-ones, facilitated by Lewis acid catalysis, is presented. This reaction is carried out under mild conditions… read more here.
Keywords: quinoxalin ones; bicyclo; quinoxaline fused; fused aza ... See more keywords
Pyrrole-Fused Aza-Nanographene with Two Gulf-Edge Regions as Flexible Sites.
Sign Up to like & getrecommendations! Published in 2025 at "Organic letters"
DOI: 10.1021/acs.orglett.5c03278
Abstract: A fused octapyrrolylanthracene, representing a nonplanar pyrrole-fused aza-nanographene with two deep gulf-edge regions, was readily synthesized and found to exhibit a ladder-shaped bent structure. Electrochemical studies revealed reversible multielectron oxidation up to four electrons. Stepwise… read more here.
Keywords: nanographene two; fused aza; gulf edge; edge regions ... See more keywords