[EN] PROCESS INVOLVING CROSS METATHESIS OF OLEFINS<br/>[FR] PROCÉDÉ METTANT EN JEU UNE MÉTATHÈSE CROISÉE D'OLÉFINES
申请人:GIVAUDAN SA
公开号:WO2015136093A1
公开(公告)日:2015-09-17
A method of forming a macrocyclic musk compound comprising the steps of:- i) cross-metathesizing a first olefin and a second olefin in the presence of a homogeneous transition metal catalyst comprising an alkylidene ligand, to form a statistical mixture of a hetero-dimer intermediate of said first and second terminal olefin, and homo-dimers ii) separating the hetero-dimer from the statistical mixture of hetero-and homo- dimers iii) and cyclizing the hetero-dimer intermediate to form the macrocyclic musk compound.
Synthesis of Gemini analogs of 19-norcalcitriol and their platinum(II) complexes
作者:Pawel Brzeminski、Adrian Fabisiak、Klaudia Berkowska、Lucie Rárová、Ewa Marcinkowska、Rafal R. Sicinski
DOI:10.1016/j.bioorg.2020.103883
日期:2020.7
known 2-methylene A-ring phosphine oxide. Due to the nature of the constructed steroidal side chains (bidentate ligands), which allowed coordination of metal ions, the first conjugate-type platinum(II) complexes of the vitamin D analogs were also successfully prepared and characterized. The target vitamin D compounds, displaying significant affinity for a vitamin D receptor, were assessed in vitro
Allylic zirconium reagents that are generated in situ via allylic C-H bond activation of alkenes proved to serve as metal counterparts in nickel-catalyzed cross-coupling reactions.
A method of forming a macrocyclic musk compound comprising the steps of:—
i) cross-metathesizing a first olefin and a second olefin in the presence of a homogeneous transition metal catalyst comprising an alkylidene ligand, to form a statistical mixture of a hetero-dimer intermediate of said first and second terminal olefin, and homo-dimers
ii) separating the hetero-dimer from the statistical mixture of hetero- and homo-dimers
iii) and cyclizing the hetero-dimer intermediate to form the macrocyclic musk compound.
A method of forming a macrocyclic musk compound comprising the steps of:—
i) cross-metathesizing a first olefin and a second olefin in the presence of a homogeneous transition metal catalyst comprising an alkylidene ligand, to form a statistical mixture of a hetero-dimer intermediate of said first and second terminal olefin, and homo-dimers
ii) separating the hetero-dimer from the statistical mixture of hetero- and homo-dimers
iii) and cyclizing the hetero-dimer intermediate to form the macrocyclic musk compound.