Abstract The [5+ 2] cycloaddition allows the synthesis of a diversity of complex highly
functionalized seven‐membered products in a single step. These cycloadducts can readily …

Palladium-catalyzed [5+ 2] cycloaddition of 2-aryl-2-vinyloxiranes with sulfamate-derived
cyclic imines is described. The zwitterionic allylpalladium intermediates act as five …

This chapter aims to provide an overview of the key synthetic methods, reactions, and
applications reported in 2015 in the area of seven-membered heterocyclic compounds. Most …

Treatment of 4-aminobenzoyl hydrazide (1) with (CS2) and potassium hydroxide in absolute
(EtOH) resulted in formation of 5-(4-aminophenyl)-2-thiol-1, 3, 4-oxadiazole (2). Compound …

Cycloaddition reactions are important tools in organic chemistry, allowing the synthesis of
complex cyclic skeletons of a number of natural products and biologically active substances …