A new entry to phenanthridine ring systems via sequential application of Suzuki and the modified Pictet–Spengler reactions
作者:Anil K. Mandadapu、Mohammad Saifuddin、Piyush K. Agarwal、Bijoy Kundu
DOI:10.1039/b905696c
日期:——
A mild, efficient and versatile method has been developed for the two step synthesis of phenanthridine ring systems using the Suzuki and the modified PictetâSpengler strategy. The strategy involves synthesis of a substrate in which an aryl amine is tethered to an activated arene ring at the carbon ortho to the activated carbon nucleophile so as to facilitate the formation of phenanthridine ring viaÏ-cyclization.
Efficient synthesis of new 6-arylphenanthridines based on microwave-assisted Suzuki–Miyaura cross-coupling and Pictet–Spengler dehydrogenative cyclization in a zinc chloride/[Bmim]BF<sub>4</sub> mixture
作者:Andrés-Felipe Villamizar-Mogotocoro、Sandra-Milena Bonilla-Castañeda、Vladimir V. Kouznetsov
DOI:10.1039/d2gc02548e
日期:——
An ecofriendly, efficient method for the synthesis of new pharmacologically active 6-arylphenanthridines has been developed for the first time. This method involves consecutive microwave-assisted Suzuki–Miyaura and Pictet–Spengler processes starting from inexpensive available 2-bromoaniline derivatives and 3,4-dimethoxyphenylboronic acid to be easily converted into 2-aminobiphenyl precursors, which