[EN] QUINAZOLINE DERIVATIVES<br/>[FR] DERIVES DE QUINAZOLINE
申请人:ASTRAZENECA AB
公开号:WO2005030757A1
公开(公告)日:2005-04-07
The invention concerns a quinazoline derivative of the Formula (I): wherein each of the variables have any of the meanings defined in the description; processes for their preparation, pharmaceutical compositions containing them and their use in the manufacture of a medicament for use as an antiproliferative agent in the prevention or treatment of tumours which are sensitive to inhibition of erbB receptor tyrosine kinases.
Quenching of Singlet Oxygen by Tertiary Aliphatic Amines. Structural Effects on Rates and Products
作者:Enrico Baciocchi、Tiziana Del Giacco、Andrea Lapi
DOI:10.1002/hlca.200690211
日期:2006.10
product study of the reaction of a series of α-methyl-substituted N-methylpiperidines with thermally generated 1O2 in MeCN was carried out. It was found that as the number of α-methyl groups (Me in α-position relative to the N-atom) increases, the rate of 1O2 quenching (physical plus chemical) slightly decreases. This finding shows that, with respect to the reaction rate, stericeffects are much more important
进行了一系列α-甲基取代的N-甲基哌啶与MeCN中热生成的1 O 2的反应的动力学和产物研究。已经发现,随着α-甲基基团的数目(相对于N原子的Me位于α位)的增加,1 O 2淬灭的速率(物理加化学的)略有降低。该发现表明,就反应速率而言,空间效应比电子效应重要得多,因为后者应产生相反的结果。相反,对于导致氮的化学淬灭却发现了相反的结果-脱甲基化产物和N-甲酰基衍生物。对于N-脱甲基化与N-甲酰基衍生物的形成之间的比率(NH / NCHO比率),观察到相同的趋势。所有这些结果与方案1中报道的机理一致,方案1中首先形成激基复合物,该激基复合物通过H原子转移过程产生α-氨基取代的C-自由基。后者通过一次电子氧化形成N-脱甲基化的产物,或通过自由基偶联提供N-甲酰基衍生物(方案1)。使用N,N获得了相似的结果-二甲基环己胺。然而,就反应速率,化学猝灭程度和NH / NCHO比而言,这种“无环”胺表现出与N-甲基哌啶系列完全不同的行为。
Catalyst-free selective <i>N</i>-formylation and <i>N</i>-methylation of amines using CO<sub>2</sub> as a sustainable C1 source
作者:Qizhuang Zou、Guangcai Long、Tianxiang Zhao、Xingbang Hu
DOI:10.1039/c9gc03637g
日期:——
We herein describe catalyst-free selective N-formylation and N-methylation of amines using CO2 as a sustainable C1 source.
我们在此描述了使用CO2作为可持续的C1来源的无催化剂选择性N-甲酰化和N-甲基化胺的方法。
Catalyst-free N-formylation of amines using BH<sub>3</sub>NH<sub>3</sub> and CO<sub>2</sub> under mild conditions
The catalyst-free N-formylation of aminesusing CO2 as the C1 source and BH3NH3 as the reductant has been developed for the first time. The corresponding formylated products of both primary and secondary amines are obtained in good to excellent yields (up to 96% of isolated yield) undermildconditions.
α-oxygenation of tertiaryamines by employing a Cu/nitroxyl radical catalyst system. The use of moderately hindered nitroxyl radicals, such as 1,5-dimethyl-9-azanoradamantane N-oxyl (DMN-AZADO) and 1-methyl-2-azaadamanane N-oxyl (1-Me-AZADO), was very important to promote the oxygenation effectively mainly because these N-oxyls have longer life-times than less hindered N-oxyls. Various types of tertiary N-methylamines