Pd-Catalyzed Highly Chemo- and Regioselective Hydrocarboxylation of Terminal Alkyl Olefins with Formic Acid
作者:Wenlong Ren、Jianxiao Chu、Fei Sun、Yian Shi
DOI:10.1021/acs.orglett.9b02101
日期:2019.8.2
An efficient Pd-catalyzed hydrocarboxylation of alkenes with HCOOH is described. A wide variety of linear carboxylic acids bearing various functional groups can be obtained with excellent chemo- and regioselectivities under mild reaction conditions. The reaction process is operationally simple and requires no handling of toxic CO.
[EN] NOVEL SYNTHESIS ROUTES FOR PROSTAGLANDINS AND PROSTAGLANDIN INTERMEDIATES USING METATHESIS<br/>[FR] NOUVELLES VOIES DE SYNTHÈSE POUR DES PROSTAGLANDINES ET DES INTERMÉDIAIRES DE PROSTAGLANDINE PAR MÉTATHÈSE
申请人:IRIX PHARMACEUTICALS INC
公开号:WO2015048736A1
公开(公告)日:2015-04-02
Methods of synthesizing prostaglandins, prostaglandin analogs and their synthetic intermediates are described. The methods can comprise metal- catalyzed metathesis reactions. Also provided are synthetic intermediates that can be used in the synthesis of the prostaglandins and prostaglandin analogs.
Selective Isomerization–Hydroformylation Sequence: A Strategy to Valuable α-Methyl-Branched Aldehydes from Terminal Olefins
作者:Paweł Dydio、Marten Ploeger、Joost N. H. Reek
DOI:10.1021/cs400872a
日期:2013.12.6
For the first time, an original selective isomerization-hydroformylation sequence to convert terminal olefins bearing an anionic moiety to α-methyl-branched aldehydes with unprecedented selectivities is reported. This opens up new synthetic avenues to these valuable building blocks from inexpensive and bioavailable substrates. The catalytic system involves a suitable selective monoisomerization catalyst
challenging intramolecular hydroacyloxylation reaction. Both HFIP and an internal carboxy group have been proven to be crucial for the successful implementation of this transformation; these are proposed to assist the formation and stabilization of the key cationic intermediate via hydrogen-bondinginteractions with perrhenate anion (ReO4–).
该出版物描述了 Re 2 O 7在六氟异丙醇 (HFIP) 中的应用,用于活化惰性和电子失活的烯烃,以促进具有挑战性的分子内加氢酰氧基化反应。HFIP 和内部羧基均已被证明对于成功实施这一转变至关重要;这些被提议通过与高铼酸盐阴离子 (ReO 4 – )的氢键相互作用来帮助关键阳离子中间体的形成和稳定。