Synthesis and Reactions of N-Ethynyl-heterocycles

Abstract

Synthesis of N-ethynyl-heterocycles by elimination, nucleophilic substitution, isomerization, benzotriazole intermediates and other methods are reviewed.The reactions of N-ethynyl-heterocycles including additions, cycloadditions and polymerizations are discussed.2.2 Addition reactions 2.3 Cycloaddition reactions 2.3.1 [2+1] Cycloadditions 2.3.2 [2+2] Cycloadditions 2.3.3 [4+2] Cycloadditions 2.3.3.1 [4+2] Cycloadditions of nitroalkenes with ynamines 2.3.3.2Hetero-Diels-Alder reaction 2.3.4Metal-mediated cycloadditions 2.4 Ynamines as nucleophiles 2.5 Ynamine-Claisen rearrangement 2.6 Polymerization