Regioselective Ni-Catalyzed Carboxylation of Allylic and Propargylic Alcohols with Carbon Dioxide
作者:Yue-Gang Chen、Bin Shuai、Cong Ma、Xiu-Jie Zhang、Ping Fang、Tian-Sheng Mei
DOI:10.1021/acs.orglett.7b01208
日期:2017.6.2
efficient Ni-catalyzed reductive carboxylation of allylic alcohols with CO2 has been successfully developed, providing linear β,γ-unsaturated carboxylic acids as the sole regioisomer with generally high E/Z stereoselectivity. In addition, the carboxylic acids can be generated from propargylicalcohols via hydrogenation to give allylic alcohol intermediates, followed by carboxylation. A preliminary mechanistic
Multistep Enzymatic Synthesis of Long-Chain α,ω-Dicarboxylic and ω-Hydroxycarboxylic Acids from Renewable Fatty Acids and Plant Oils
作者:Ji-Won Song、Eun-Yeong Jeon、Da-Hyun Song、Hyun-Young Jang、Uwe T. Bornscheuer、Deok-Kun Oh、Jin-Byung Park
DOI:10.1002/anie.201209187
日期:2013.2.25
A multistep enzyme catalysis was successfully implemented to produce long‐chain α,ω‐dicarboxylic and ω‐hydroxycarboxylic acids from renewable fatty acids and plant oils. Sebacic acid as well as ω‐hydroxynonanoic acid and ω‐hydroxytridec‐11‐enoic acid were produced from oleic and ricinoleic acid.
[EN] CATIONIC LIPIDS FOR NUCLEIC ACID DELIVERY AND PREPARATION THEREOF<br/>[FR] LIPIDES CATIONIQUES POUR L'ADMINISTRATION D'ACIDES NUCLÉIQUES ET LEUR PRÉPARATION
申请人:TECH INNOVATION MOMENTUM FUND ISRAEL LIMITED PARTNERSHIP
公开号:WO2018087753A1
公开(公告)日:2018-05-17
The present invention provides cationic lipids and lipid nanoparticle formulations comprising these lipids, alone or in combination with other lipids. These lipid nanoparticles may be formulated with nucleic acids to facilitate their intracellular delivery both in vitro and for therapeutic applications. The present invention also provides methods of chemical synthesis of these lipids, lipid nanoparticle preparation and formulation with nucleic acids.
Switchable Site-Selective Catalytic Carboxylation of Allylic Alcohols with CO<sub>2</sub>
作者:Manuel van Gemmeren、Marino Börjesson、Andreu Tortajada、Shang-Zheng Sun、Keisho Okura、Ruben Martin
DOI:10.1002/anie.201702857
日期:2017.6.1
allylic alcohols has been developed in which CO2 is used with dual roles, both facilitating C-OH cleavage and as a C1 source. This protocol is characterized by its mild reaction conditions, absence of stoichiometric amounts of organometallicreagents, broad scope, and exquisite regiodivergency which can be modulated by the type of ligand employed.
by the regio- and stereoselective ring opening of β, γ, and δ-lactones with unsaturated substituents at the ω-position using organocopperreagents such as halomagnesium diorganocuprates or Grignard reagents in the presence of copper(I) iodide. Both the organocopperreagents with primary, secondary, tertiary alkyl, and phenyl groups gave the corresponding carbon homologated alkenoic acids in good yields