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Updated: Jun 24, 2026

Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
Published on: January 3, 2018
Norbornene and Base-Regulated Divergent Synthesis of Fluorenones and Phenanthrenes from Aryl Halides and
Ying Fu1, Yu Luo1, Wenying Yang1
1Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China.
Abstract:
A palladium-catalyzed, norbornene- and norbornadiene-mediated Catellani-type annulation reaction of haloarenes with 2-halomandelic acids prepared 9-fluorenones and phenanthrenes, respectively. Theoretical investigations suggest that, within the norbornene-engaged cascades, more reactive 2-(2-bromophenyl)-2-oxoacetic acid was generated and participated in ensuing transformations. In contrast, for processes mediated by norbornadiene, 2-bromomandelic acid was converted into its dipotassium salt to participate in the following cascade.
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