3299-38-5Relevant articles and documents
Synthesis process method of 3-substituted-1H-pyrrole
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Paragraph 0124-0126; 0173-0177, (2020/05/30)
The invention provides a synthetic process method of a 3-substituted-1H-pyrrole compound. The process method comprises the following steps: by taking diethylamine hydrochloride and glycine ethyl esterhydrochloride as initial raw materials, respectively carrying out Mannich reaction and sulfamide reaction, and carrying out cyclization reaction, dehydration thinning reaction, aromatization reactionand hydrolysis decarboxylation reaction to obtain a 3-substituted-1H-pyrrole compound. According to the synthesis process method of the 3-substituted-1H-pyrrole compound, the whole synthesis route isgood in step repeatability, mild in operation condition and high in safety, and large-scale production and industrial popularization are facilitated; post-treatment energy consumption is low, a largeamount of toxic wastewater is not generated, no pollution is caused to the environment, the production safety level and the production cost are reduced, application of green and environment-friendlyindustrial production is facilitated, and wide application prospects are achieved.
A novel method for biomimetic synthesis of Mannich bases
Guo, Yuan,An, Jing,Lu, Zhenhuan,Peng, Mengjiao
experimental part, p. 1561 - 1564 (2012/10/07)
Since the early studies of Mannich, Mannich reaction has become an important tool for the synthesis of new compounds. Mannich bases can be either directly employed or used as intermediates. In this work, the one-carbon unit transfer reaction of tetrahydrofolate coenzyme was initiated. 1,3-Dimethylimidazolidine as a new tetrahydrofolate coenzyme model at formaldehyde oxidation level was used to react with ketone having active hydrogen atoms and amine to give the corresponding Mannich base in good yield by a covert Mannich reaction. A novel method for biomimetic synthesis of various Mannich bases is provided. 1,3-Dimethylimidazolidine as a new tetrahydrofolate coenzyme model at formaldehyde oxidation level was used to react with ketone having active hydrogen atoms and amine to give the corresponding Mannich base in good yield by a covert Mannich reaction. A novel method for biomimetic synthesis of various Mannich bases is provided. Copyright
N-donor ligand as catalyst: A simple Aza-Michael addition reaction in aqueous media
Pawar, Shivaji S.,Dekhane, Deepak V.,Shingare, Murlidhar S.,Thore, Shivaji N.
experimental part, p. 1869 - 1873 (2009/06/18)
(Chemical Equation Presented) A novel approach for the Aza-Michael addition reactions between various amines and α,β-unsaturated esters, nitriles and ketones using N-donor Ligand catalyst (3 mol %) is described. The reactions are carried out in aqueous media at an ambient temperature to afford the products in excellent yields.
