Ru-Catalyzed Completely Deoxygenative Coupling of 2-Arylethanols through Base-Induced Net Decarbonylation
作者:Seetharaman Manojveer、Sebastian J. K. Forrest、Magnus T. Johnson
DOI:10.1002/chem.201705208
日期:2018.1.19
Substituted arylethanols can be coupled by using a readily available Ru catalyst in a fully deoxygenative manner to produce hydrocarbon chains in one step. Control experiments indicate that the first deoxygenation occurs through an aldol condensation, whereas the second occurs through a base‐induced net decarbonylation. This double deoxygenation enables further development in the use of alcohols as
Palladium-Catalyzed Heck-Type Reactions of Allylic Esters with Arylboronic Acids or Potassium Aryltrifluoroborates
作者:Bo Yao、Yan Liu、Meng-Ke Wang、Jin-Heng Li、Ri-Yuan Tang、Xing-Guo Zhang、Chen-Liang Deng
DOI:10.1002/adsc.201100889
日期:2012.4.16
A selective and general route to (E)‐1,3‐diaryl‐prop‐1‐enes and (E)‐3‐arylallyl acetates has been developed by palladium‐catalyzed Heck‐type reactions of allylic esters with arylboronicacids or potassium aryltrifluoroborates. The present method selectively proceeds including β‐OAc elimination or β‐H elimination on the basis of the boronic acids. Whereas a variety of allylic esters were reacted with
Palladium-Catalyzed Selective Heck-Type Diarylation of Allylic Esters with Aryl Halides Involving a β-OAc Elimination Process
作者:Yan Liu、Bo Yao、Chen-Liang Deng、Ri-Yuan Tang、Xing-Guo Zhang、Jin-Heng Li
DOI:10.1021/ol1031552
日期:2011.3.4
Palladium-catalyzed selective Heck-type diarylation of allylic esters with arylhalides has been developed. Allylic esters are reacted with aryl iodides to provide the corresponding 1,3-diaryl propenes through a β-OAc elimination process. It is noteworthy that the methodology can be applied in constructing the indole and benzofuran skeletons.
of Cs2CO3, the first simple, efficient, and one-pot procedure for the synthesis of 3,5-diaryl pyridines via a variety of aromatic terminal alkynes with benzamides as the nitrogen source in sulfolane is described. The formation of pyridine derivatives accompanies the outcome of 1,3-diaryl propenes, which are also useful intermediates in organic synthesis. Thus, pyridine ring results from a formal [2+2+1+1]
在 Cs 2 CO 3的存在下,描述了第一个简单、有效和一锅法合成 3,5-二芳基吡啶的方法,该方法通过各种芳族末端炔烃以苯甲酰胺作为环丁砜中的氮源。吡啶衍生物的形成伴随着 1,3-二芳基丙烯的生成,这也是有机合成中有用的中间体。因此,吡啶环源自三个炔烃与苯甲酰胺的正式 [2+2+1+1] 环缩合反应,其中一个炔烃提供一个碳,而苯甲酰胺仅提供氮源。在这项工作中发现了炔烃的新转化以及苯甲酰胺的新用途。
Ruthenium Pincer-Catalyzed Selective Synthesis of Alkanes and Alkenes via Deoxygenative Coupling of Primary Alcohols
作者:Bitan Sardar、Nandita Biswas、Dipankar Srimani
DOI:10.1021/acs.organomet.2c00519
日期:2023.1.9
The selective conversion of alcohols to alkanes and alkenes is a captivating but extremely difficult process. Herein, we explored the activity of an acridine-derived SNS–Ru pincer complex in the selective conversion of primary alcohols into both long-chain alkenes and alkanes. Both homo- and cross-coupling reactions provide good yields of the desired products with excellent selectivity. Various control