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
Direct Reduction of Allylic Alcohols Using Isopropanol as Reductant
作者:Masahiro Sai
DOI:10.1002/adsc.201800731
日期:2018.9.17
lithium cation‐catalyzed direct reduction of allylicalcohols to alkenes using isopropanol as a hydride donor was developed. The hydride transfer of the in situ‐generated lithium isopropoxide to an allylic cation is the key process in this transformation. The reaction generates only water and acetone as byproducts, which highlights the synthetic utility of this method.
Nickel-catalyzed cross-electrophile coupling of aryl chlorides with allylic alcohols
作者:Hang Yu、Zhong-Xia Wang
DOI:10.1039/d1ob01874d
日期:——
Nickel-catalyzed cross-electrophile coupling of aryl chlorides with allylicalcohols proceeds readily under mild conditions in the presence of zinc powder and MgCl2 to produce allylarenes in 25–92% yields. The reaction shows high regioselectivity and E/Z-selectivity, giving linear allylation products with an E configurated double bond when 1- or 3-arylallyl alcohols were used as the substrates. Functional groups including
作者:Yulei Wang、Zhipeng Lin、João C. A. Oliveira、Lutz Ackermann
DOI:10.1021/acs.joc.1c00682
日期:2021.11.19
The oxidative intermolecular nitrogenation of C(sp3)–H bonds represents one of the most straightforward strategies to construct nitrogen-containing molecules. However, a sacrificial chemical oxidant is generally required. Herein, we describe electrochemical oxidative intermolecular allylic C(sp3)–Haminations in an undivided cell by electric current. The cross-dehydrogenative amination proceeded efficiently
C(sp 3 )-H 键的氧化分子间氮化代表了构建含氮分子的最直接的策略之一。然而,通常需要牺牲化学氧化剂。在此,我们通过电流描述了未分割电池中的电化学氧化分子间烯丙基 C(sp 3 )-H 胺化。在无金属和无化学氧化剂的反应条件下,交叉脱氢胺化反应在大范围内有效进行,得到分子 H 2作为唯一的副产物。
Implanting Nitrogen into Hydrocarbon Molecules through CH and CC Bond Cleavages: A Direct Approach to Tetrazoles
作者:Feng Chen、Chong Qin、Yuxin Cui、Ning Jiao
DOI:10.1002/anie.201105505
日期:2011.11.25
From simple beginnings: A novel Cu‐promoted direct incorporation of nitrogen into simple hydrocarbon molecules under mild and neutral reaction conditions is described. 1,5‐Disubstituted tetrazoles are efficiently constructed by two CH and one CCbondcleavages (see scheme; TMS=trimethylsilyl). This protocol provides a new and unique strategy to functionalize simple and readily available hydrocarbon