A clean sweep: Aryl and aliphatic imines can be synthesized directly and efficiently from alcohols and amines under mild, neutral conditions with the liberation of only molecular hydrogen and water (see scheme; R=isopropyl, tert‐butyl). This general, environmentally benign reaction is catalyzed by a de‐aromatized ruthenium PNP pincer complex (0.2 mol %), and can proceed in toluene under an inert atmosphere
一目了然:在温和的中性条件下,醇和胺可仅由分子氢和水释放(见方案; R =异丙基,叔丁基),可直接有效地由醇和胺合成芳基和脂族亚胺。这种一般的,对环境无害的反应是由脱芳香化的钌PNP钳形配合物(0.2摩尔%)催化的,可以在甲苯中于惰性气氛或空气中进行。
Transamidation of Primary Amides with Amines Using Hydroxylamine Hydrochloride as an Inorganic Catalyst
作者:C. Liana Allen、Benjamin N. Atkinson、Jonathan M. J. Williams
DOI:10.1002/anie.201107348
日期:2012.2.6
Metal‐free catalysis: A method for the transamidation of primaryamides with primary or secondary amines provides access to secondary and tertiary amides, by utilizing catalytic quantities of hydroxylaminehydrochloride to activate the chemically robust primary amide group (see scheme). A mechanism of primary amide activation through a hydrogen‐bonding complex is proposed.
[EN] PYRIDAZINONES FOR THE TREATMENT OF CANCER<br/>[FR] PYRIDAZINONES POUR LE TRAITEMENT DU CANCER
申请人:MAX PLANCK GES ZUR FÖRDERUNG DER WISSENSCHAFTEN E V
公开号:WO2015189433A1
公开(公告)日:2015-12-17
The present invention relates to novel substituted pyrrolo- and pyrazolo-pyridazinones, as well as pharmaceutical compositions containing at least one of these substituted pyrrolo- and pyrazolo-pyridazinones together with at least one pharmaceutically acceptable carrier, excipient and/or diluent. Said novel substituted pyrrolo- and pyrazolo-pyridazinones are binding to the prenyl binding pocket of PDE5 and therefore, are useful for the prophylaxis and treatment of cancer by inhibition of the binding of PDEδ to farnesylated Ras proteins and thereby, inhibition of oncogenic Ras signaling in cells.