Palladium(0)-catalyzed cyclization-carbonylation of 2,7-octadienyl acetate and homologues
摘要:
The palladium(0)-catalyzed carbonylations, in acetic acid as a necessary solvent, of 2,7-octadienyl acetate and homologues via pi-allylpalladium species were preceded by their intramolecular oelfin insertion to form mixtures of cis/trans-2-vinylcyclopentylacetyl- and cis/trans-cyclohexylacetylpalladium intermediates, which undergo further the intramolecular (5-exo) Heck reaction to give bicyclo-[3.3.0] and [4.3.0] skeletons, respectively, except for one case affording trans-2-vinylcyclopentylacetic acid as a major product.
Direct Synthesis of an α,ω-Diester from 2,7-Octadienol as Bulk Feedstock in Three Tandem Catalytic Steps
作者:Karoline A. Ostrowski、Dennis Vogelsang、Thomas Seidensticker、Andreas J. Vorholt
DOI:10.1002/chem.201503785
日期:2016.1.26
A new tandemcatalytic process was designed and developed as a tool for the direct conversion of the widely available feedstock 2,7‐octadienol into an α,ω‐diester. This innovative auto‐tandem catalysis is atom efficient and consists of three consecutive palladium‐catalysed reactions: ether formation, ether carbonylation and alkoxycarbonylation. By using the design of experiments (DoE) approach, significant
USES OF CERTAIN PLATINOID ACCUMULATING PLANTS FOR USE IN ORGANIC CHEMICAL REACTIONS
申请人:CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
公开号:US20160159934A1
公开(公告)日:2016-06-09
A composition derived from the acid treatment of ashes obtained after heat treatment of selected plants or plant material is provided. The selected plants accumulate metal from the platinum group (platinoids). The compositions can be used to produce catalysts for performing various organic synthesis reactions.
Palladium Catalysed Acid‐Free Carboxytelomerisation of 1,3‐Butadiene with Alcohols Accessing Pelargonic Acid Derivatives Including Triglycerides under Selectivity Control
作者:Dennis Vogelsang、Johanna Vondran、Kevin Hares、Kevin Schäfer、Thomas Seidensticker、Andreas J. Vorholt
DOI:10.1002/adsc.201901383
日期:2020.2.6
100% atom economic manner. Effects of nucleophilicity and sterical demands were revealed for monoalcohols, di‐ and polyols. Whilst yields, chemoselectivity and E/Z‐selectivity of the pelargonic acidderivatives were excellent with up to 99%, selectivity towards mono‐, di‐ and triesters could be controlled successfully. Finally, the reaction profile of the carboxytelomerisation glycerol was uncovered
作者:Maria-Manuel Barreto-Rosa、Michel C. Bonnet、Gérard Commenges、Blanca Manzano、Adriano L. Monteiro、Denis Neibecker、Igor Tkatchenko
DOI:10.1016/0022-328x(93)83040-3
日期:1993.6
Mixtures of 1-methoxy- and 3-methoxy-octadienes are readily converted into epimeric 2-vinylcyclopentylacetates, under moderate pressures of CO in the presence of rhodium chloride and hydrochloric acid.