Copper-catalyzed oxidative coupling of acids with alkanes involving dehydrogenation: facile access to allylic esters and alkylalkenes
作者:Cheng-Yong Wang、Ren-Jie Song、Wen-Ting Wei、Jian-Hong Fan、Jin-Heng Li
DOI:10.1039/c4cc09393c
日期:——
We here describe a new copper-catalyzed oxidative coupling of acids with alkanes for the selective synthesis of allylic esters and alkylalkenes. This method achieves multiple dehydrogenation and esterification, representing a new unactivated C(sp(3))-Hoxidative esterification of acids with common alkanes.
Silver-catalyzed decarboxylative C(sp<sup>2</sup>)–C(sp<sup>3</sup>) coupling reactions <i>via</i> a radical mechanism
作者:Zhongxue Fang、Chenlong Wei、Jing Lin、Zhenhua Liu、Wei Wang、Chenshu Xu、Xuemin Wang、Yu Wang
DOI:10.1039/c7ob02455j
日期:——
A silver catalyzed decarboxylative C(sp2)–C(sp3) coupling of vinylic carboxylic acids with alcohols, alkylbenzenes, cycloalkanes and cyclic ethers was developed by using DTBP as an oxidant. This reaction tolerates a wide range of substrates, and products are obtained in good to excellent yields. The reaction also shows good stereoselectivity, and only trans-isomers are obtained. In addition, a radical
Copper porphyrin-catalyzed cross dehydrogenative coupling of alkanes with carboxylic acids: Esterification and decarboxylation dual pathway
作者:Xiao-Yan Chen、Shuang Yang、Bao-Ping Ren、Lei Shi、Dong-Zi Lin、Hao Zhang、Hai-Yang Liu
DOI:10.1016/j.tet.2021.132377
日期:2021.9
A dual-functional copper porphyrin-catalyzed cross dehydrogenative coupling (CDC) of carboxylic acids with alkanes was reported firstly. The reaction gives allylic esters or alkylalkenes depending on the carboxylic acid substrates. Copper porphyrin catalyzed CDC method has the superiority of short reaction time, good functional group tolerance, base and solvent free, producing target products in an
<i>Z</i>-Selective Olefin Synthesis via Iron-Catalyzed Reductive Coupling of Alkyl Halides with Terminal Arylalkynes
作者:Chi Wai Cheung、Fedor E. Zhurkin、Xile Hu
DOI:10.1021/jacs.5b01784
日期:2015.4.22
Selective catalytic synthesis of Z-olefins has been challenging. Here we describe a method to produce 1,2-disubstituted olefins in high Z selectivity via reductive cross-coupling of alkylhalides with terminal arylalkynes. The method employs inexpensive and nontoxic catalyst (iron(II) bromide) and reductant (zinc). The substrate scope encompasses primary, secondary, and tertiaryalkylhalides, and
Peroxide promoted tunable decarboxylative alkylation of cinnamic acids to form alkenes or ketones under metal-free conditions
作者:Jing Ji、Ping Liu、Peipei Sun
DOI:10.1039/c5cc01762a
日期:——
In the presence of DTBP or DTBP/TBHP, the decarboxylative alkylation of cinnamic acids with alkanes gave alkenes and ketones respectively via a radical mechanism in moderate to good yields.