Electrifying Phthalimide-<i>N</i>-Oxyl (PINO) Radical Chemistry: Anodically Induced Dioxygenation of Vinyl Arenes with <i>N</i>-Hydroxyphthalimide
作者:Stanislav A. Paveliev、Oleg O. Segida、Andrey Dvoretskiy、Mark M. Dzyunov、Uliana V. Fedorova、Alexander O. Terent’ev
DOI:10.1021/acs.joc.1c02367
日期:2021.12.17
An electrochemical process of free-radical difunctionalization of vinyl arenes with N-hydroxyphthalimide resulting in vicinal dioxyphthalimides was discovered. The reaction proceeds with the use of pyridinium perchlorate and pyridine as a supporting electrolyte and a base, respectively. The present approach involves the anodic generation of stabilized phthalimide-N-oxyl (PINO) radical, which adds to
Cerium(IV) ammonium nitrate: Reagent for the versatile oxidative functionalization of styrenes using N-hydroxyphthalimide
作者:Igor B. Krylov、Stanislav A. Paveliev、Olesya K. Matveeva、Alexander O. Terent'ev
DOI:10.1016/j.tet.2019.03.030
日期:2019.4
Cerium(IV) ammonium nitrate was found to be a versatilereagent for the oxidative functionalization of styrenes using N-hydroxyphthalimide and iodine affording three different types of products with oxyphthalimide, nitrate and iodide groups. It was shown that reaction of styrenes with N-hydroxyphthalimide and cerium(IV) ammonium nitrate can be selectively directed to oxynitro-oxyphthalimides and dioxyphthalimides
Cobalt Catalyst‐Controlled Selective Dioxygenation of Styrenes Using
<i>N‐</i>
Hydroxyphthalimide with Molecular Oxygen
作者:Xiaosong Hao、Huihui Ji、Hongju Zhan、Qian Zhang、Dong Li
DOI:10.1002/adsc.202100921
日期:2022.1.4
A cobalt-catalyzed selective dioxygenation of styrenes with N-hydroxyphthalimide (NHPI) was developed using molecular oxygen as the terminal oxidant. Alcohol and ketone products can be selectively formed from identical substrates by catalyst control. The reaction was applicable to a broad range of styrenes and exhibited good functional group tolerance. It provided a method for preparation of 1,2-diol
A novel and facile oxyazidation of alkenes under metal-free and mild conditions has been reported. A remarkable feature of the developed procedure is consecutive construction of C-O and C-N bonds in one step. The process allows quick and selective assembly of alkyl azide from readily available starting materials, where N-hydroxyphthalimide was used as an oxygen-radical precursor and TMSN3 as the N3 source. A range of aromatic alkenes bearing synthetically useful functional groups was tolerated.
DIXON, D. W.;WEISS, R. H., J. ORG. CHEM., 1984, 49, N 23, 4487-4494