NHC-catalyzed [3 + 3] cycloaddition of α-bromoenals with nitroketene aminals or nitroketene <i>N</i>,<i>S</i>-acetals: synthesis of nitro-containing dihydropyridin-2-ones
作者:Yarui Li、Xiaoxia Huang、Shiyong Peng、Jian Wang、Ming Lang
DOI:10.1039/d2ob02334b
日期:——
An efficient N-heterocyclic carbene (NHC)-catalyzed [3 + 3] cycloaddition of α-bromoenals with β-nitro enamines has been developed.
Microwave-assisted synthesis of Nitroketene N,S-Arylaminoacetals
作者:Diego P. Sangi、Arlene G. Corrêa
DOI:10.1590/s0103-50532010000500005
日期:——
In this paper we report the use of microwaves as heat source to promote the synthesis of a series of nitroketene N,S-acetals with good to excellent isolated yields. These compounds are very useful intermediates for synthesizing nitrogen-containing heterocycles.