the precatalyst and a cheap silane, (MeO)3SiH, as both the hydrogen-atom donor and the F-atom acceptor, enabling intramolecular/intermolecular hydroaminations of alkenes, two-component carboamination of alkenes, and even three-component carboamination of alkenes. A wide range of valuable aliphatic sulfonamides can be readily prepared using these practical reactions.
Intermolecular Anti-Markovnikov Hydroamination of Unactivated Alkenes with Sulfonamides Enabled by Proton-Coupled Electron Transfer
作者:Qilei Zhu、David E. Graff、Robert R. Knowles
DOI:10.1021/jacs.7b11144
日期:2018.1.17
Here we report a catalytic method for the intermolecularanti-Markovnikovhydroamination of unactivated alkenes using primary and secondary sulfonamides. These reactions occur at room temperature under visible light irradiation and are jointly catalyzed by an iridium(III) photocatalyst, a dialkyl phosphate base, and a thiol hydrogen atom donor. Reaction outcomes are consistent with the intermediacy
在这里,我们报告了一种使用初级和次级磺酰胺对未活化烯烃进行分子间抗马尔科夫尼科夫加氢胺化的催化方法。这些反应在室温下在可见光照射下发生,并由铱 (III) 光催化剂、磷酸二烷基酯碱和硫醇氢原子供体共同催化。反应结果与通过磺酰胺 NH 键的质子耦合电子转移激活产生的 N 中心磺酰胺自由基的中间体一致。概述了反应的合成范围(> 60 个例子)和机械特征的研究。
USE OF SUBSTITUTED 2-AMIDOBENZIMIDAZOLES, 2-AMIDOBENZOXAZOLES AND 2-AMIDOBENZOTHIAZOLES OR SALTS THEREOF AS ACTIVE SUBSTANCES AGAINST ABIOTIC PLANT STRESS
申请人:BAYER CROPSCIENCE AG
公开号:US20150216168A1
公开(公告)日:2015-08-06
The use of substituted 2-amidobenzimidazoles, 2-amidobenzoxazoles and 2-amidobenzothiazoles of the general formula (I) or salts thereof
where the radicals in the general formula (I) correspond to the definitions given in the description,
for enhancing stress tolerance in plants to abiotic stress, for strengthening plant growth and/or for increasing plant yield, and to selected processes for preparing the compounds mentioned above.
USE OF SUBSTITUTED BENZODIAZEPINONES AND BENZAZEPINONES OR THE SALTS THEREOF AS ACTIVE SUBSTANCES AGAINST ABIOTIC PLANT STRESS
申请人:BAYER CROPSCIENCE AG
公开号:US20150218110A1
公开(公告)日:2015-08-06
The use of substituted benzodiazepinones and benzazepinones of the general formula (I) or salts thereof
where the radicals in the general formula (I) correspond to the definitions given in the description,
for enhancing stress tolerance in plants to abiotic stress, for strengthening plant growth and/or for increasing plant yield, and to selected processes for preparing the compounds mentioned above.