Synthesis and diverse general oxidative cyclization catalysis of high-valent Mo<sup>VI</sup>O<sub>2</sub>(HL) to ubiquitous heterocycles and their chiral analogues with high selectivity
作者:Nabyendu Pramanik、Satinath Sarkar、Dipanwita Roy、Sudipto Debnath、Sukla Ghosh、Saikat Khamarui、Dilip K. Maiti
DOI:10.1039/c5ra21825j
日期:——
The first synthesis and diverse oxidative cyclization catalysis properties of high-valent MoVI–triazole are demonstrated towards highly selective construction of benzimidazoles, benzothiazoles, isoxazolines, isoxazoles and their chiral analogues.
Generation of Nitrile Oxides under Nanometer Micelles Built in Neutral Aqueous Media: Synthesis of Novel Glycal-Based Chiral Synthons and Optically Pure 2,8-Dioxabicyclo[4.4.0]decene Core
作者:Nirbhik Chatterjee、Palash Pandit、Samiran Halder、Amarendra Patra、Dilip K. Maiti
DOI:10.1021/jo801337k
日期:2008.10.3
for chemoselective oxidation of aldoximes to nitrile oxides by iodosobenzene in neutral aqueousmedia is reported. Their in situ intermolecular 1,3-dipolar cycloaddition (1,3-DC) with olefins in nanometer aqueous micelles occurs with improved stereoselectivity and acceleration of reactionrate toward synthesis of new chiral synthons, 3-(2'-C-3',4',6'-tri-O-benzylglycal)-Delta(2)-isoxazolines and others