Aerobic Oxidation of a Tertiary Aliphatic Amine Under Visible-Light Photocatalysis: Facile Synthesis of Methylene-Bridged Bis-1,3-dicarbonyl Compounds
作者:Woo-Jin Yoo、Arata Tanoue、Shū Kobayashi
DOI:10.1002/asia.201200807
日期:2012.12
Lights, camera, action! An efficient protocol for the formation of methylene‐bridged bis‐1,3‐dicarbonyl compounds has been developed through an aerobic photocatalytic oxidative coupling reaction between 1,3‐dicarbonyl compounds and a tertiary aliphaticamine.
Functionalization of aliphatic tertiary amines mediated by hexachloroethane/cat. copper: synthesis of propargylic amines and methylene-bridged bis-1,3-dicarbonyl derivatives
作者:Xiaoliang Xu、Zhichuang Ge、Dongping Cheng、Xiaonian Li
DOI:10.3998/ark.5550190.0013.810
日期:——
Copper-catalyzed functionalization of aliphatictertiaryamines with the assistance of C2Cl6 is described. This method details the alkynylation of aliphatictertiaryamines and the synthesis of methylene-bridgedbis-1,3-dicarbonylderivatives. The mechanism of the selective oxidation of aliphatictertiaryamines was also discussed. A broad spectrum of aliphatictertiaryamines was examined in this
A metal-free strategy for the cross-dehydrogenative coupling of 1,3-dicarbonyl compounds with 2-methoxyethanol
作者:Vishal Suresh Kudale、Sheng Zheng、Sheng-Hua Huang、Yu-Lun Chang、Jeh-Jeng Wang
DOI:10.1039/d1ob02290c
日期:——
we report a metal-free approach for the construction of methylene-bridged bis-1,3-dicarbonyl compounds via cross-dehydrogenative coupling of 1,3-dicarbonylcompounds with 2-methoxyethanol. In addition, we have extended this methodology to synthesize tetra-substituted pyridine derivatives using 1,3-dicarbonyl, 2-methoxyethanol and NH4OAc in one step. The key advantages include accepting a wide range
在这里,我们报告了一种通过1,3-二羰基化合物与 2-甲氧基乙醇的交叉脱氢偶联来构建亚甲基桥连双 1,3-二羰基化合物的无金属方法。此外,我们扩展了这一方法,以一步合成四取代吡啶衍生物,使用 1,3-二羰基、2-甲氧基乙醇和 NH 4 OAc。主要优势包括接受广泛的底物,利用 O 2作为唯一氧化剂,以及合成生物活性化合物,如 1,4-二氢吡啶和吡唑。
Facile synthesis of bis-1,3-dicarbonyl compounds using inert dichloromethane as a one-carbon source
作者:Li-Ming Jiang、Kai Xiang、Hai-Juan Jiao、Jing-Lin Yang、Heng-Tong Qu、Xue-Tao Xu、Wen-Bao、Dao-Yong Zhu、Shao-Hua Wang
DOI:10.1016/j.tetlet.2023.154564
日期:2023.6
simple and convenientprocedure for the preparation of valuable bis-1,3-dicarbonyl-substituted methane compounds and their derivatives has been developed using inert dichloromethane as one-carbon source in good to excellent yields. The advantages of this protocol are mild reaction conditions, easily scalable and good functional group compatibility. Moreover, the use of cyclic secondaryamine as the promoter
Visible-light photoredox-mediated oxidation of N-methyl tertiaryamines under catalyst free conditions: Direct synthesis of methylene-bridged bis-1,3-dicarbonyl compounds
作者:Xiao-Jun Dai、Xiao-Liang Xu、Dong-Ping Cheng、Xiao-Nian Li
DOI:10.1016/j.cclet.2014.01.021
日期:2014.4
Mediated by visible light-induced photoredox catalysis and free of other catalysts, a new and efficient synthesis of methylene-bridged bis-1,3-dicarbonyl derivatives has been developed. A variety of N-methyl tertiaryamines and 1,3-dicarbonyl compounds were investigated in this reaction. (C) 2014 Xiao-Liang Xu and Xiao-Nian Li. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.