Synthesis of thiocyanato-containing phenanthrenes and dihydronaphthalenes <i>via</i> Lewis acid-activated tandem electrophilic thiocyanation/carbocyclization of alkynes
作者:Yong Gao、Ruirui Hua、Hongquan Yin、Fu-Xue Chen
DOI:10.1039/d3ob00001j
日期:——
A tandem electrophilic thiocyanation and cyclization of arene-alkynes has been developed under mild conditions, affording thiocyanato-substituted phenanthrenes, dihydronaphthalenes, 2H-chromenes and dihydroquinolines in moderate to excellent yields. This reaction provides an efficient protocol for the construction of C–SCN and C–C bonds in one step. In this transformation, N-thiocyanato reagent serves
Synthesis of Polycyclic Aromatics and Heteroaromatics via Electrophilic Cyclization
作者:Tuanli Yao、Marino A. Campo、Richard C. Larock
DOI:10.1021/jo050104y
日期:2005.4.1
A variety of substituted polycyclic aromatics are readily prepared in good to excellent yields under very mild reaction conditions by the reaction of 2-(1-alkynyl)biphenyls with ICl, I-2, NBS, and p-O2NC6H4SCl. This methodology readily accommodates various functional groups and has been successfully extended to systems containing a variety of polycyclic and heterocyclic rings.