METHOD FOR PRODUCING CIS- AND TRANS-ENRICHED MDACH
申请人:BASF SE
公开号:US20170260115A1
公开(公告)日:2017-09-14
A process for preparing trans-enriched MDACH, including: distilling an MDACH starting mixture in the presence of an auxiliary, which is an organic compound having a molar mass of 62 to 500 g/mol, a boiling point at least 5° C. above the boiling point of cis,cis-2,6-diamino-1-methylcyclohexane, and 2 to 4 functional groups, each of which is independently an alcohol group or a primary, secondary or tertiary amino group. The MDACH starting mixture includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, based on the total amount of MDACH present in the MDACH starting mixture. The MDACH starting mixture includes both trans and cis isomers. Trans-enriched MDACH includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, where the proportion of trans isomers in the mixture is higher than the proportion of trans isomers in the MDACH starting mixture.
[EN] INHIBITORS OF RAF KINASES<br/>[FR] INHIBITEURS DE KINASES RAF
申请人:KINNATE BIOPHARMA INC
公开号:WO2020198058A1
公开(公告)日:2020-10-01
Provided herein are inhibitors of receptor tyrosine kinase effector, RAF, pharmaceutical compositions comprising said compounds, and methods for using said compounds for the treatment of diseases.
A remarkable proline-catalyzed method for the construction of biologically interesting oxygen-bridged tricyclic ketal skeletons was uncovered by starting from a variety of readily available cyclic 1,3-diketones and either 1,4- or 1,5-dicarbonyl substrates. The approach, which mimics a biosynthetic Knoevenagelcondensation/[4+2] cycloaddition sequence, establishes a viable synthetic strategy for the
Switching between Novel Samarium(II)-Mediated Cyclizations by a Simple Change in Alcohol Cosolvent
作者:Thomas K. Hutton、Kenneth W. Muir、David J. Procter
DOI:10.1021/ol0358399
日期:2003.12.1
undergo two very different stereoselective cyclization reactionsmediated by samarium(II) iodide depending upon the alcohol cosolvent used in the reaction. Switching between an unprecedented aldol spirocyclization and a novel cyclobutanol-forming process can be achieved simply by changing the alcohol cosolvent from methanol to tert-butyl alcohol. [reaction: see text]
An efficient and reusable vanadium based catalytic system for room temperature oxidation of alcohols to aldehydes and ketones
作者:Gayatri Sarmah、Saitanya K. Bharadwaj、Anindita Dewan、Ankur Gogoi、Utpal Bora
DOI:10.1016/j.tetlet.2014.07.047
日期:2014.9
A simple and efficient vanadium based catalyst system for the oxidation of primary and secondary alcohols to aldehydes or ketones is reported using tert-butyl hydroperoxide as oxidizing agent and vanadyl sulfate as catalyst at roomtemperature. The versatility of the catalytic protocol is studied with wide variety of substrates.