[EN] METHOD OF CYCLIC COMPOUNDS PRODUCTION IN OLEFINE METATHESIS REACTION AND USE OF RUTHENIUM CATALYSTS IN PRODUCTION OF CYCLIC OLEFINS IN OLEFINE METATHESIS REACTION<br/>[FR] PROCÉDÉ DE PRODUCTION DE COMPOSÉS CYCLIQUES DANS UNE RÉACTION DE MÉTATHÈSE D'OLÉFINES ET UTILISATION DE CATALYSEURS AU RUTHÉNIUM DANS LA PRODUCTION D'OLÉFINES CYCLIQUES DANS UNE RÉACTION DE MÉTATHÈSE D'OLÉFINES
申请人:UNIV WARSZAWSKI
公开号:WO2018197963A1
公开(公告)日:2018-11-01
The invention relates to a method for the preparation of cyclic compounds in the metathesis of olefins from acyclic dienes comprising terminal and/or non-terminal C=C double bonds; the invention also relates to the use of homogeneous ruthenium complexes and homogeneous ruthenium complexes deposited on a solid support as catalysts and/or pre-catalysts for the preparation of cyclic olefins in olefin metathesis reactions. Formula (I)
Highly Substrate‐Selective Macrocyclic Ring Closing Metathesis
作者:Ravindra S. Phatake、Noy B. Nechmad、Ofer Reany、N. Gabriel Lemcoff
DOI:10.1002/adsc.202101515
日期:2022.4.12
oligomerization, providing high macrocyclic yields even at relatively high concentrations. Alternatively, for substrates containing two internal doublebonds, a sacrificial methylene donor can be used to obtain the desired products. With this methodology, lactones, lactams, and macrocyclic ketones ranging from 13- to 22-membered rings could be synthesized in moderate to high yields. In addition, synthetic applications
rectal musk glands which often led to the death of the animals. Recently, a lot of effort was invested to obtain such macrocycles in a synthetic way. This research presents a study on the preparation of macrocyclic lactones with the musk scent by ring‐closing metathesis (RCM) using biomass‐derived starting materials: oleic and 9‐decenoic acid. An experimental rule correlating the C–C double bond substitution
Sequential Alkene Isomerization and Ring‐Closing Metathesis in Production of Macrocyclic Musks from Biomass
作者:Adrian Sytniczuk、Gwénaël Forcher、Douglas B. Grotjahn、Karol Grela
DOI:10.1002/chem.201800728
日期:2018.7.20
We report successful utilization of sequential alkene isomerization and ring‐closing metathesis of dec‐9‐enoic acid based dienes in synthesis of macrocyclic lactones that possess a strong scent of musk. This catalytic sequence was essential to trim the chain length of starting dienes to yield macrocycles of the right size. Dec‐9‐enoic acid is conveniently obtainable from oleic esters by Ru‐catalysed
contemporary ruthenium catalysts used for olefin metathesis is described, being the first reported example of formation of Ru carbene organometallic complexes in solid state. Three key organometallic transformations commonly used in the synthesis of the second and third generations of Ru catalysts in solution—phosphine ligand (PCy3) exchange with in situ formed N‐heterocyclic carbene (NHC) ligand, PCy3 to pyridine