Chemoselective oxidation of organozinc reagents with oxygen
作者:Ingo Klement、Henning Lütjens、Paul Knochel
DOI:10.1016/s0040-4020(97)00603-0
日期:1997.7
Functionalized organozinc compounds prepared by hydrozincation, carbozincation or by boron-zincexchange can be directly oxidized in a selective manner to the corresponding functionalized alcohols or hydroperoxides depending on the reaction conditions.
Mediator and Additive Free Trifluoromethyl-Fluorination of Terminal Alkenes by Persistent Perfluoroalkyl Radical
作者:Azusa Sato、Maksym V. Ponomarenko、Taizo Ono、Gerd-Volker Röschenthaler、Vadim A. Soloshonok
DOI:10.1002/ejoc.201900651
日期:2019.7.23
The dual reactivity of the persistent perfluoro‐3‐ethyl‐2,4‐dimethyl‐3‐pentyl radical (PPFR) allows for both trifluoromethylation and fluorination of terminal olefins. This new approach towards di‐functionalized 1‐CF3‐2‐F‐alkanes demonstrates the widespread synthetic potential.
and other biologically active small molecules. Herein, we report their direct synthesis from alkenes through an aminative difunctionalization reaction enabled by iron catalysis. A family of ten novel hydroxylamine‐derived aminating reagents were designed for the installation of several medicinally relevant amine groups, such as methylamine, morpholine and piperazine, through the aminochlorination of
An intermolecularanti-Markovnikovhydroamination of alkenes has been developed using triethyl phosphite and N-hydroxyphthalimide. The process tolerates a wide range of alkenes, including vinyl ethers, silanes, and sulfides as well as electronically unbiased terminal and internal alkenes. The resultant N-alkylphthalimides can readily be transformed to the corresponding primary amines. Mechanistic probes
Direct Synthesis of Unprotected 2-Azidoamines from Alkenes via an Iron-Catalyzed Difunctionalization Reaction
作者:Szabolcs Makai、Eric Falk、Bill Morandi
DOI:10.1021/jacs.0c11025
日期:2020.12.23
Unprotected, primary 2-azidoamines are versatile precursors to vicinal diamines, which are among the most common motifs in biologically active compounds. Herein, we report their operationally simple synthesis through an iron-catalyzed difunctionalization of alkenes. A wide array of alkene substrates are tolerated, including complex drug-like molecules and a tripeptide. Facile derivatizations of the
未受保护的初级 2-叠氮胺是邻二胺的通用前体,邻二胺是生物活性化合物中最常见的基序之一。在此,我们通过铁催化的烯烃双官能化报告了它们在操作上的简单合成。可以耐受多种烯烃底物,包括复杂的类药物分子和三肽。叠氮胺基团的轻松衍生证明了这种掩蔽二胺基序在化学选择性正交转化中的多功能性。该方法在 RO 20-1724 的简明合成以及 (±)-hamacanthin B 和 (±)-quinagolide 的正式全合成中的应用进一步证明了这种高官能团耐受反应的广泛合成潜力.