Facile access to <i>N</i>-formyl imide as an <i>N</i>-formylating agent for the direct synthesis of <i>N</i>-formamides, benzimidazoles and quinazolinones
N-Formamide synthesis using N-formyl imide with primary and secondary amines with catalytic amounts of p-toluenesulfonic acid monohydrate (TsOH·H2O) is described. This reaction is performed in water without the use of surfactants. Moreover, N-formyl imide is efficiently synthesized using acylamidines with TsOH·H2O in water. In addition, N-formyl imide was successfully used as a carbonyl source in the
Copper-(II) Catalyzed <i>N</i>
-Formylation and <i>N</i>
-Acylation of Aromatic, Aliphatic, and Heterocyclic Amines and a Preventive Study in the C-N Cross Coupling of Amines with Aryl Halides
作者:Rahul B. Sonawane、Nishant K. Rasal、Dattatraya S. Bhange、Sangeeta V. Jagtap
DOI:10.1002/cctc.201800609
日期:2018.9.7
A Cu‐(II) catalyzed N‐formylation and N‐acylation of amines with moderate to excellent yields, using N, N‐dimethyl formamide (DMF) and N, N‐dimethyl acetamide (DMA) as a formyl and acylating sources in the presence of 1,2,4‐triazole is reported. This novel, highly efficient and simple protocol shows broad substrate scope for aliphatic, aromatic, and heterocyclic amines. In addition, the conditions
Supported nano-gold-catalyzed N-formylation of amines with paraformaldehyde in water under ambient conditions
作者:Zhengang Ke、Yan Zhang、Xinjiang Cui、Feng Shi
DOI:10.1039/c5gc01992c
日期:——
A simple and efficient Au/Al2O3 catalyst was prepared for the oxidative N-formylation of amines and paraformaldehyde under ambient conditions with up to 97% yield.
on the activation of C≡O bond by π-back bonding from the transitionmetal center were developed during the past decades. Herein, a new CO activation method, in which the CO was converted to the active acyl-like metalloradical, [(por)Rh(CO)]• (por = porphyrin), was reported. The reactivity of [(por)Rh(CO)]• and other rhodium porphyrin compounds, such as (por)RhCHO and (por)RhC(O)NH nPr, and corresponding
将一氧化碳 (CO) 转化为石化原料和精细化学品至关重要。在过去的几十年中,开发了许多基于通过过渡金属中心的 π 背键激活 C≡O 键的策略。在此,报道了一种新的 CO 活化方法,其中将 CO 转化为活性酰基类金属基团 [(por)Rh(CO)]• (por = 卟啉)。[(por)Rh(CO)]• 和其他铑卟啉化合物,如 (por)RhCHO 和 (por)RhC(O)NH nPr 的反应性以及相应的机制研究是通过实验和计算进行的,并启发了设计一种具有 100% 原子经济性的新转化系统,可使用卟啉铑 (II) 金属基促进胺羰基化为甲酰胺。遵循这种基于自由基的途径,
Dodecacarbonyltriruthenium catalysed carbonylation of amines and hydroamidation of olefins
benzylamine, N-benzylformamide was obtained in 77% yield. 1-Octene was hydroamidated with benzylamine to N-benzylnonanamide in 67% yield (the selectivity to its linear isomer was 81%). These reactions appear to include ruthenium carbamoyl complex as the common key intermediate.
十二碳三钌(Ru 3(CO)12)是一种有效的均相催化剂前体,用于在一氧化碳压力为40 kg cm -2的条件下在120–180°C下进行胺的羰基化和烯烃的加氢酰胺化。通过苄胺的羰基化,以77%的产率获得了N-苄基甲酰胺。用苄胺将1-辛烯加氢酰胺化为N-苄基壬酰胺,产率为67%(其线性异构体的选择性为81%)。这些反应似乎包括钌氨基甲酰基络合物作为常见的关键中间体。