A variety of medium‐sized cycloalkynes were efficiently synthesized by the double Nicholas reaction of cobalt complex and bis(hetero)substituted acyclic compound. The alkyne moiety within the ring has a unique bent structure and high reactivity toward cycloaddition reactions. Furthermore, preparation of multifunctionalized alkynes was achieved by embedding the cycloalkyne within a peptide chain.
The present invention relates generally to catalysts and processes for the Z-selective formation of internal olefin(s) from terminal olefin(s) via homo-metathesis reactions.
本发明通常涉及催化剂和过程,用于通过同型交换反应从末端烯烃中Z-选择性地形成内部烯烃。
Highly Z-selective olefins metathesis
申请人:Massachusetts Institute of Technology
公开号:US09079173B2
公开(公告)日:2015-07-14
The present invention relates generally to catalysts and processes for the Z-selective formation of internal olefin(s) from terminal olefin(s) via homo-metathesis reactions.
本发明涉及催化剂和过程,用于通过同型烯烃交换反应从末端烯烃中Z-选择性地形成内部烯烃。
New Unsaturated Azamacrocyclic Enediynes: Synthesis, Structural Analysis and Thermal Behavior
The reaction of a bispropargyl bromide enediyne with several bis-NH-sulfonamide nucleophiles permits the easy synthesis of 14- and 19-membered macrocyclic enediynes. The new nitrogen-containing unsaturated macrocycles are fully characterized. The thermal reactivity of the new cyclic enediyne derivatives is investigated by means of differential scanning calorimetry (DSC).
The present invention relates generally to catalysts and processes for the Z-selective formation of internal olefin(s) from terminal olefin(s) via homo-metathesis reactions.