Thienopyrazoles, their preparation, pharmaceutical compositions comprising these compounds, and their pharmaceutical uses in the treatment of disease states capable of being modulated by the inhibition of the protein kinases, in particular interleukin-2 inducible tyrosine kinase (ITK).
Efficient Hydrolysis of Nitriles to Amides with Hydroperoxide Anion in Aqueous Surfactant Solutions as Reaction Medium
作者:Lucia Brinchi、Lisa Chiavini、Laura Goracci、Pietro Di Profio、Raimondo Germani
DOI:10.2174/157017809787582708
日期:2009.3.1
Aliphatic and aromatic nitriles are converted to corresponding amides in a single step via hydrolysis with basic H2O2 in aqueous solution of the surfactant Cetyltrimethylammonium methanesulfonate (CTAOMs). The method has several advantages: use and recycle of water as reaction medium, use of environmentally benign oxidant H2O2, easy product isolation, short reaction time, high yields and selectivity
Synthesis of Spiro-dihydroquinoline and Octahydrophenanthrene Derivatives via Palladium-Catalyzed Intramolecular Oxidative Arylation
作者:Zhong-Lin Zang、Shuklachary Karnakanti、Sheng Zhao、Ping Hu、Zhen Wang、Pan-Lin Shao、Yun He
DOI:10.1021/acs.orglett.7b00228
日期:2017.3.17
A method for intramolecular sp2 C–H oxidative arylation of unactivated cyclic olefins has been developed to access spiro-dihydroquinoline and octahydrophenanthrene derivatives in a straightforward and efficient manner. Bearing picolinamide as a directing group, the alkenyl anilines cyclized to afford spiro-dihydroquinolines in moderate to excellent yields via direct oxidative arylation, while the alkenyl
Catalytic Multisite-Selective Acetoxylation Reactions at sp<sup>2</sup> vs sp<sup>3</sup> C–H Bonds in Cyclic Olefins
作者:Zhong-Lin Zang、Sheng Zhao、Shuklachary Karnakanti、Cheng-Lin Liu、Pan-Lin Shao、Yun He
DOI:10.1021/acs.orglett.6b02458
日期:2016.10.7
The first Pd-catalyzed multisite-selective acetoxylation reactions are disclosed at an unactivated alkene sp2 C–H bond versus secondary allylic sp3 C–H bond in cyclic olefins via the modulation of directing groups. The different directing groups overcome the key challenge in differentiating C–H bonds and provide a new controlling approach for site-specific C–H activation. A wide variety of substrates