金(I)催化吡啶N-氧化物对1,4-二炔-3-酮的级联环化可直接构建苯并[6,7]环庚[1,2- b ]呋喃骨架,形成四个债券。该反应将通过氧化环化,炔基迁移和5 -endo-dig型环化进行。还介绍了通过两步序列(包括环氧化和In(OTf)3催化的分子内碳-碳键形成)合成苯并萘酮稠合的萘并[1,2- b ]呋喃。
Carbon–Carbon Bond Formation via Catalytically Generated Aminocarbene Complexes: Rhodium‐Catalyzed Hydroaminative Cyclization of Enynes with Secondary Amines
rhodium catalysts. The hydroaminative cyclization of 2‐vinylphenylacetylene derivatives with secondary amines gives 2‐aminoindenes in good yields. The reaction is considered to proceed through carbon–carbonbondformation on a catalytically generated aminocarbene ligand.
Metal-free synthesis of 2-aminonaphthalenes by intramolecular transannulation of 1-sulfonyl-4-(2-alkenylphenyl)-1,2,3-triazoles
作者:Ze-Feng Xu、Xing Yu、Dongdong Yang、Chuan-Ying Li
DOI:10.1039/c7ob00637c
日期:——
A facile metal-free synthesis of 2-aminonaphthalenes by intramolecular transannulation of 1-sulfonyl-4-(2-alkenylphenyl)-1,2,3-triazoles was realized with the proposed ketenimine as the key intermediate.