Water-tolerant unstabilized carbanion equivalents: Bismuth(III) chloride-aluminum promoted alkylations of immonium cations to amines in aqueous Media
摘要:
In the presence of bismuth(III) chloride-metallic aluminum, alkyl as well as allyl halides react with N-(alkylamino)benzotriazoles at 20-degrees-C in THF-water to give the corresponding homoalkylated amines in high yields.
[EN] CALICHEAMICIN DERIVATIVES AND ANTIBODY DRUG CONJUGATES THEREOF<br/>[FR] DÉRIVÉS DE CALICHÉAMICINE ET CONJUGUÉS ANTICORPS-MÉDICAMENTS DE CEUX-CI
申请人:PFIZER
公开号:WO2018138591A1
公开(公告)日:2018-08-02
The present invention is directed to novel calicheamicin derivatives useful as payloads in antibody-drug-conjugates (ADC's), and to payload-linker compounds and ADC compounds comprising the same; to pharmaceutical compositions comprising the same and to methods for using the same to treat pathological conditions such as cancer.
CO2 as a C1-building block for the catalytic methylation of amines
作者:Olivier Jacquet、Xavier Frogneux、Christophe Das Neves Gomes、Thibault Cantat
DOI:10.1039/c3sc22240c
日期:——
A novel catalytic reaction has been designed to utilize, for the first time, CO2 as a C1 feedstock in the synthesis of N-methylamines. Simple zinc catalysts, based on commercially available zinc salts and ligands, prove highly efficient in promoting both a 6 electron reduction of carbon dioxide and the formation of a C–N bond, using hydrosilanes and amines.
A Highly Active Catalyst for Pd-Catalyzed Amination Reactions: Cross-Coupling Reactions Using Aryl Mesylates and the Highly Selective Monoarylation of Primary Amines Using Aryl Chlorides
作者:Brett P. Fors、Donald A. Watson、Mark R. Biscoe、Stephen L. Buchwald
DOI:10.1021/ja8055358
日期:2008.10.15
reactivity for C-N cross-coupling reactions is reported. This catalyst system enables the use of arylmesylates as a coupling partner in C-N bond-forming reactions. Additionally, the use of BrettPhos permits the highly selective monoarylation of an array of primary aliphatic amines and anilines at low catalyst loadings and with fast reaction times, including the first monoarylation of methylamine. Lastly
Base-oxidant promoted metal-free N-demethylation of arylamines
作者:VINAYAK BOTLA、CHIRANJEEVI BARREDDI、RAMANA V DAGGUPATI、CHANDRASEKHARAM MALAPAKA
DOI:10.1007/s12039-016-1152-7
日期:2016.9
metal-free oxidative N-demethylation of arylamines with triethylamine as a base and tert-butyl hydroperoxide (TBHP) as oxidant is reported in this paper. The reaction is general, practical, inexpensive, non-toxic, and the method followed is environmentally benign, with moderate to good yields. Here we report a metal-free oxidative N-demethylation of arylamines with triethylamine as a base and tert-butyl
A novel methodology is presented for the direct methylation of amines, using formic acid as a unique source of carbon and hydrogen. Based on ruthenium(II) catalysts, the formation of the N-CH3 group proceeds via an efficient formylation/transfer hydrogenation pathway.