Magnesium promoted autocatalytic dehydrogenation of amine borane complexes: A reliable, non-cryogenic, scalable access to boronic acids
作者:Ludovic D. Marciasini、Jimmy Richard、Bastien Cacciuttolo、Guillaume Sartori、Melodie Birepinte、Laurent Chabaud、Sandra Pinet、Mathieu Pucheault
DOI:10.1016/j.tet.2018.11.036
日期:2019.1
access boronic acids. The intrinsic instability of magnesium aminoborohydride was tweaked into a tandem dehydrogenation borylation sequence. Proceeding via an autocatalytic cycle, amineborane dehydrogenation was induced by a variety of Grignard reagents. Overall, addition of the organomagnesium species onto specially designed dialkylamine-borane complexes led to a variety of boronic acids in high yields
Ag(<scp>i</scp>)/persulfate-catalyzed decarboxylative coupling of α-oxocarboxylates with organotrifluoroborates in water under room temperature
作者:Sheng Chang、Jian Feng Wang、Lin Lin Dong、Dan Wang、Bo Feng、Yuan Tai Shi
DOI:10.1039/c7ra10924e
日期:——
AgNO3 using K2S2O8 as oxidant to generate diarylketone products in high yields. The method is novel, simple, safe and efficient. Both aryl substituted potassium α-oxocarboxylates and organotrifluoroborates proceeded smoothly in water under room temperature. The utilization of α-oxocarboxylates as acylatingagent presents some elements of interest.
α-氧代羧酸盐和有机三氟硼酸盐的脱羧偶联反应在催化AgNO 3的存在下使用K 2 S 2 O 8作为氧化剂顺利进行,从而以高收率生成二芳基酮产物。该方法新颖,简单,安全,高效。芳基取代的α-氧代羧酸钾和有机三氟硼酸在室温下均能顺利进行。α-氧代羧酸盐作为酰化剂的利用表现出一些令人感兴趣的元素。