A new family of phosphine ligands bearing a bulky carbazolyl scaffold is described. With the combination of ligand 2a and Pd(OAc)2, difficult tri-ortho-substituted biaryl couplings are accomplished smoothly. In particular, the catalyst loading as low as 0.02 mol% of Pd for non-activated 2,6-disubstituted aryl chloride coupling can be achieved.
[EN] METHOD FOR PRODUCING AMIDINE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRODUCTION DE DÉRIVÉS D'AMIDINE
申请人:BIOCRYST PHARM INC
公开号:WO2016029216A2
公开(公告)日:2016-02-25
The invention provides methods and intermediates useful in the synthesis of a compound of formula (I): or a pharmaceutically acceptable salt, solvate, ester or prodrug thereof; wherein the variables are as defined herein.
Room-temperature phosphorescence (RTP) with p-π and π-π synergy is realized by combining phosphine and carbazole groups in three hybrid molecules (xCzTPP). The harmonized p-electronic feature and steric effect of the phosphine group result in RTP efficiency and lifetime of para-substituted pCzTPP up to 13.8 % and 645 ms, respectively, owing to its sequential and complementary triplet p-π and π-π components