Methanol as the C<sub>1</sub> source: redox coupling of nitrobenzenes and alcohols for the synthesis of benzimidazoles
作者:Hengzhao Li、Yuntong Zhang、Zihan Yan、Zemin Lai、Ruoyan Yang、Mengqi Peng、Yanhao Sun、Jie An
DOI:10.1039/d1gc03907e
日期:——
We present an operationally simple redox coupling for the synthesis of N-1 substituted benzimidazoles using feedstock building block 2-nitroaniline derivatives as the precursors and methanol as the C1 source. Higher atom, step, and redox economies and excellent regioselectivity were achieved compared with conventional synthesis using diaminobenzene and formic acid derivatives.
我们提出了一种操作简单的氧化还原偶联,用于合成 N-1 取代的苯并咪唑,使用原料构建块 2-硝基苯胺衍生物作为前体,甲醇作为 C 1源。与使用二氨基苯和甲酸衍生物的常规合成相比,实现了更高的原子、步骤和氧化还原经济性以及出色的区域选择性。
Novel-N-(bicyclic heterocyclyl)-4-piperidinamines
申请人:Janssen Pharmaceutica N.V.
公开号:US04760074A1
公开(公告)日:1988-07-26
Novel N-(bicyclic heterocyclyl)-4-piperidinamines having antihistaminic and serotonin-antagonistic properties which are useful in the treatment of allergic diseases.
Novel N-(bicyclic heterocyclyl)-4-piperidinamines having anti-histaminic and serotonin-antagonistic properties which are useful in the treatment of allergic diseases.
A new and distinct cultivar of
Persicaria
plant named ‘Flamingo Feathers’, characterized by its upright to broadly spreading plant habit; vigorous growth habit and moderate to rapid growth rate; durable and healthy medium green-colored leaves; early and freely flowering habit; long flowering period; long straight and slender inflorescences with numerous flowers that are bright pink in color; and good garden performance.