A <i>para</i>
-C-H Functionalization of Aniline Derivatives via In situ Generated Bulky Hypervalent Iodinium Reagents
作者:Chao Tian、Xu Yao、Weizhe Ji、Qian Wang、Guanghui An、Guangming Li
DOI:10.1002/ejoc.201801058
日期:2018.11.25
A general para‐selective C‐H functionalization was achieved via a stericcontrol strategy. Para‐iodo, bromo, chloro, nitro, and trifluormethyl aniline derivatives were prepared via in situ generated, bulky hypervalent iodinium reagents in as little as 10 min. Products can be purified without column chromatography or recrystallization, which significantly reduces the waste and simplifies the work‐up
n of alkenes with anilines has been developed for the atom-economical synthesis of 2-substituted propanamides bearing an α-stereocenter. A novel phosphoramidite ligand L16 was discovered which exhibited very high reactivity and selectivity in the reaction. This asymmetric Markovnikov hydroaminocarbonylation employs readily available starting materials and tolerates a wide range of functional groups
[DE] ISOPENTYLCARBOXANILIDE ZUR BEKÄMPFUNG VON UNTERWÜNSCHTEN MIKROORGANISMEN<br/>[EN] ISOPENTYL CARBOXANILIDES FOR COMBATING UNDESIRED MICRO-ORGANISMS<br/>[FR] ISOPENTYLCARBOXANILIDES POUR LUTTER CONTRE DES MICRO-ORGANISMES INDESIRABLES
申请人:BAYER CROPSCIENCE AG
公开号:WO2005042494A1
公开(公告)日:2005-05-12
Neue Isopentylcarboxanilide der Formel (I) (I) in welcher L, R1, R3 und A die in der Beschreibung angegebenen Bedeutungen haben, mehrere Verfahren zum Herstellen dieser Stoffe und deren Verwendung zum Bekämpfen von unerwünschten Mikroorganismen, sowie neue Zwischenprodukte und deren Her-stellung.
Electrochemical radical reactions of alkyl iodides: a highly efficient, clean, green alternative to tin reagents
作者:Diyuan Li、Tsz-Kan Ma、Reuben J. Scott、Jonathan D. Wilden
DOI:10.1039/d0sc01694b
日期:——
C-centered radicals. Intermolecular ‘tin-like’ radical reactions can subsequently be conducted under the most benign of conditions. The yields and efficiency of the processes are competitive and even superior in most cases to comparable conditions with tributyltin hydride. The use of air and electricity as the promotor (instead of a tin or other reagent) combined with the aqueous reaction media make this
作者:Hai T. Dao、Chao Li、Quentin Michaudel、Brad D. Maxwell、Phil S. Baran
DOI:10.1021/jacs.5b05144
日期:2015.7.1
problem of olefin hydromethylation is presented. This highly chemoselective method can tolerate labile and reactive chemical functionalities and uses a simple set of reagents. An array of olefins, including mono-, di-, and trisubstituted olefins, are all smoothly hydromethylated. This mild protocol can be used to simplify the synthesis of a specific target or to directly “edit” complex natural products