Phosphorus versus Sulfur: Discovery of Benzenephosphonamidates as Versatile Sulfonamide‐Mimic Chemotypes Acting as Carbonic Anhydrase Inhibitors
作者:Alessio Nocentini、Paola Gratteri、Claudiu T. Supuran
DOI:10.1002/chem.201805039
日期:——
The first zinc‐binding group (ZBG) to have been identified as inhibitor of the metallo‐enzymes carbonicanhydrases (CA, EC 4.2.1.1) was the sulfonamide. From then on several classes of zinc‐binders have been described. This work reports the benzenephosponamidates as a new chiral aromatic sulfonamide‐mimic ZBG able to meet the requirements for effectively binding the enzyme active site. Several low
Palladium/nickel-mediated cross coupling reaction between phosphorylamides and alkenes toward enephosphorylamides
作者:Zijian Zhao、Qiao Zhu、Shiying Che、Zhenghong Luo、Yan Lian
DOI:10.1080/00397911.2020.1774903
日期:2020.8.2
prepared from phosphorylamides and substituted alkenes. The dehydrogenative transformation took place in the presence of a combination of a palladium diacetate and nickel dichloride. The transition metal-catalyzed methodology enjoyed high efficiency and broad substrate scope. Moreover, a plausible mechanism was proposed for the oxidative C–N cross coupling protocol. Graphical Abstract
A cobalt-catalyzed strategy for N-arylmethylation of phosphorylamides was herein achieved with the assistance of azodiisobutyronitrile as the radical initiator and di-tert-butyl peroxide as the oxidant. Both methylarenes and diaryl methanes were compatible under the oxidativeconditions, expressing broad substrate scope (51 examples) and high efficiency (up to 87% yield).
A switchable formation of chloro‐ and enephosphorylamides from phosphorylamides and alkenes was disclosed herein. In the presence of Pd(OAc)2, a catalytic loading of CuBr or CuCl2 (20 mol‐%) led to the occurrence of dehydrogenative cross coupling reactions, while 1.0 equivalent of CuCl2 rendered the dehydrogenative amidochlorination reactions to take place in a stereoselective manner.
Copper-Catalyzed (Di)Arylmethylation of Phosphorylamides Under Oxidative Conditions
作者:Zijian Zhao、Xiaobo Liu、Anguo Hou、Yan Lian
DOI:10.1002/ejoc.201801194
日期:2018.12.31
A CuI‐catalyzed phosphorylamidation of benzylic C–H bonds was demonstrated. Both methylarenes and diaryl methanes were compatible in the system with broad functional groups tolerance and good efficiency (51 examples, up to 92 % yields).