Pd‐Catalyzed Reductive Cyclization of Nitroarenes with CO
<sub>2</sub>
as the CO Source
作者:Xinyu Guan、Haoran Zhu、Yingwei Zhao、Tom G. Driver
DOI:10.1002/ejoc.201901629
日期:2020.1.9
A practical, broad‐scope reductive amination process that constructs N‐heterocycles from nitroarenes was developed that uses CO2 as the source of CO.
开发了一种实用的,广谱的还原胺化工艺,该工艺利用硝基芳烃构建N杂环,并使用CO 2作为CO的来源。
ENANTIOSELECTIVE CROSS DEHYDROGENATIVE COUPLING REACTIONS AND COMPOUNDS SYNTHESIZED BY THE REACTIONS
申请人:Northwestern University
公开号:US20200181106A1
公开(公告)日:2020-06-11
Disclosed are enantioselective cross dehydrogenative coupling reactions for synthesizing tetrahydropyran compounds. Novel tetrahydropyran compounds may be synthesized by the disclosed methods as well as tetrahydropyran precursor compounds for synthesizing various naturally occurring compounds. The enantioselective cross dehydrogenative coupling reactions utilize in situ Lewis Acid activation in combination with oxidative formation of an oxocarbenium ion to provide a highly efficient and selective coupling reaction for synthesizing tetrahydropyran compounds.
Process for the scalable synthesis of 1,3,4,9-tetrahydropyrano[3,4-b]-indole derivatives
申请人:Chew Warren
公开号:US20060058532A1
公开(公告)日:2006-03-16
The invention is directed to a process of synthesizing compounds of formula (VI):
wherein R
1-
R
9
, R
3′
, R
4′
and Y are as set forth in the specification, and said method is useful for large scale synthesis thereof. The invention is also directed to useful intermediates for synthesizing the compounds of formula (VI) and processes of preparing said intermediates.
Palladium-Catalyzed Formation of<i>N</i>-Heteroarenes from Nitroarenes using Molybdenum Hexacarbonyl as the Source of Carbon Monoxide
作者:Fei Zhou、Duo-Sheng Wang、Tom G. Driver
DOI:10.1002/adsc.201500700
日期:2015.11.16
The development of a method that employs a two-chamber reaction vessel and uses molybdenum hexacarbonyl [Mo(CO)6] as the carbon monoxide (CO) source for the palladium-catalyzed transformation of nitroarenes into indoles or imidazoles is reported. The scope and limitations of our method are illustrated with 23 examples. Experiments that indicate the mechanism of the CH bond amination reaction to be
Catalytic Enantioselective Synthesis of Spirooxindoles by Oxidative Rearrangement of Indoles
作者:Chenxiao Qian、Pengfei Li、Jianwei Sun
DOI:10.1002/anie.202015175
日期:2021.3.8
rearrangement of indoles to access oxindoles has been used as a key step in complex molecule synthesis. We report a catalytic enantioselective variant of this transformation by chiral phosphoric acid catalysis, providing rapid access to a range of enantioenriched spirooxindoles. The high enantioselectivity is controlled by dynamic kinetic resolution.