Rh<sup>III</sup>‐Catalyzed Oxidative Olefination of Vinylic CH Bonds: Efficient and Selective Access to Di‐unsaturated α‐Amino Acid Derivatives and Other Linear 1,3‐Butadienes
作者:Tatiana Besset、Nadine Kuhl、Frederic W. Patureau、Frank Glorius
DOI:10.1002/chem.201101340
日期:2011.6.20
get‐together! A RhIII‐catalyzedoxidative cross‐coupling of different olefins was developed, resulting in the formation of valuable linear butadiene products and especially di‐unsaturated α‐amino acid derivatives. 1,1‐Di‐, 1,2‐di‐, and 1,1,2‐trisubstituted olefins could be coupled with styrenes and acrylates. In these reactions, remarkably high levels of chemo‐, regio‐, and stereoselectivity were obtained
PREPARATION OF TRANS,TRANS MUCONIC ACID AND TRANS,TRANS MUCONATES
申请人:Frost John W.
公开号:US20100314243A1
公开(公告)日:2010-12-16
The present invention relates to the isomerization of cis,cis and/or cis,trans muconic acid or esters thereof to trans,trans muconic acid or esters thereof and to the esterification of such muconic acids.
The first ruthenium-catalyzed oxidative homo- and cross-coupling of exclusive vinyl derivatives giving highly valued 1,3-diene building blocks is reported. The catalytic system is based on readily available reagents and it mainly delivers the E,E isomer. This methodology also enables the synthesis of adipic acid esterderivatives in a one-pot fashion after in situ ruthenium-catalyzed hydrogenation
[EN] SYNTHESIS OF OLEFINS<br/>[FR] SYNTHÈSE D'OLÉFINES
申请人:AMYRIS INC
公开号:WO2013082264A1
公开(公告)日:2013-06-06
Described herein are methods for producing 1,3-butadiene and one or more of acrylic acid and esters of acrylic acid from muconic acid or a derivative thereof.
The dehydrogenative coupling of maleic acids with alkynes proceeds smoothly accompanied by decarboxylation under rhodium catalysis to produce variously substituted a-pyrone derivatives. The catalyst system is also applicable to the coupling with 1,3-diynes and alkenes.