Ligand‐Facilitated Reductive Coupling of Benzyl Chlorides with Aryl Chlorides Catalyzed by Well‐Defined Heteroleptic Ni (II)‐NHC Complexes
作者:Gusheng Lu、Ruipeng Li、Zhengwang Shen、Qinjia Wu、Hongmei Sun
DOI:10.1002/aoc.5741
日期:2020.9
3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene), complex 1 exhibited superior catalytic activity in the magnesium‐mediated reductive coupling of benzyl chlorides with arylchlorides, featuring outstanding tolerance of both coupling partners with steric demand. This study discloses a ligand‐facilitated reductive coupling of benzyl chlorides with arylchlorides, which provides a new and practical synthetic
LiCl-Mediated Preparation of Highly Functionalized Benzylic Zinc Chlorides
作者:Albrecht Metzger、Matthias A. Schade、Paul Knochel
DOI:10.1021/ol7030697
日期:2008.3.1
In the presence of zinc dust (1.5-2.0 equiv) and LiCl (1.5-2.0 equiv), various benzylic chlorides bearing functional groups (iodide, cyanide, ester, ketone) are smoothly converted at 25 degrees C to the corresponding zinc reagents without homo-coupling (<5%). The utility of these benzyliczinc reagents is demonstrated by a short synthesis of papaverine.
Palladium catalyst systems for the regioselective Mizoroki–Heck arylation of N,N‐diprotected and N‐protected allylamines with aryl chlorides have been developed. Pd(OAc)2 in combination with appropriate additives could efficiently catalyze the linear arylation of N,N‐diprotected allylamines with aryl chlorides in toluene to give exclusively the γ‐arylated products in good to excellent yields and with
Heteroleptic Ni(II) Complexes Bearing a Bulky Yet Flexible IBiox-6 Ligand: Improved Selectivity in Cross-Electrophile Coupling of Benzyl Chlorides with Aryl Chlorides/Fluorides
作者:Zheng-Wang Shen、Die-Die Meng、Sajid Imran、Chun-Hui Yan、Hong-Mei Sun
DOI:10.1021/acs.organomet.0c00515
日期:2020.10.12
Ni(PPh3)2Br2 to give the respective heteroleptic Ni(II) complexes Ni(IBiox-6)[P(OEt)3]Br2 (1) and Ni(IBiox-6)(PPh3)Br2 (2) in yields of 60% and 71%. Their crystal structures were characterized to reveal a rare cis disposition of the IBiox-6 ligand to the phosphite ligand in 1, while 2 possessed the more common trans configuration. Both complexes catalyzed the cross-electrophile coupling of benzyl chlorides
[EN] NOVEL POTASSIUM CHANNEL BLOCKERS AND USES THEREOF<br/>[FR] NOUVEAUX BLOQUEURS DU CANAL POTASSIQUE ET LEURS UTILISATIONS
申请人:BIONOMICS LTD
公开号:WO2009149508A1
公开(公告)日:2009-12-17
The present invention relates to compounds useful in the modulation of potassium channel activity in cells, in particular the activity of Kv1.3 channels found in T cells. The invention also relates to the use of these compounds in the treatment or prevention of autoimmune and inflammatory diseases, including multiple sclerosis, pharmaceutical compositions containing these compounds and methods for their preparation.