Preparation of Esters of Phosphoric Acid by the Reaction of Trivalent Phosphorus Compounds with Diethyl Azodicarboxylate in the Presence of Alcohols
作者:Oyo Mitsunobu、Masaaki Yamada、Teruaki Mukaiyama
DOI:10.1246/bcsj.40.935
日期:1967.4
have been oxidized by means of diethyl azodicarboxylate and either benzyl or allyl alcohol to give the corresponding phosphine oxide or trialkyl phosphates. The reaction was then extended to the phosphorylation of alcohols. When allyl diethyl phosphite was treated with diethyl azodicarboxylate in the presence of an alcohol at room temperature, a corresponding alkyl diethyl phosphate and diethyl N-allyl
An Unusual Reaction of Dimethyl Azodicarboxylate with H-Dimethylphosphonate
作者:S. Munavalli、D. K. Rohrbaugh、H. D. Durst
DOI:10.1080/10426500390220998
日期:2003.9.1
When the commonly used phosphorus components of the cocktail of the classical Mitsunobo reaction are changed from triphenylphosphine and trialkylphosphite to H-dimethylphosphonate, the course of the reaction changes and leads to products arising from the involvement of the free radical reaction. This article presents the mass spectral characterization of the novel compounds along with the probable
Synthesis of benzyl hydrazine derivatives <i>via</i> amination of benzylic C(sp<sup>3</sup>)–H bonds with dialkyl azodicarboxylates
作者:A. Samzadeh-Kermani
DOI:10.1039/c7nj04880g
日期:——
A novel synthesis of benzyl hydrazines through oxidative amination of benzylic C–H bonds has been developed. The resulting aminated products are accessed directly from the reaction of alkylarenes with dialkyl/diphenyl azodicarboxylates using Cu2O/Phen as the catalytic system. The reaction proceeded smoothly and a decent range of N-substituted hydrazides was synthesized in acceptable to good yields
已开发出一种通过苄基CH键的氧化胺化合成苄基肼的新方法。使用Cu 2 O / Phen作为催化体系,直接从烷基芳烃与二烷基/偶氮二羧酸二烷基酯的反应中直接获得氨基化产物。反应进行顺利,并且以可接受的产率合成了一定范围的N-取代的酰肼。sp 3 C–H的主要和次要来源均仅提供单胺化产物。
Radical Amination of C(sp<sup>3</sup>)–H Bonds Using <i>N</i>-Hydroxyphthalimide and Dialkyl Azodicarboxylate
A direct conversion of C(sp(3))-H bonds to C(sp3)-N bonds has been achieved by utilizing catalytic N-hydroxyphthalimide (NHPI) and stoichiometric dialkyl azodicarboxylate. NHPI functions as a precursor of the electron-deficient phthalimide N-oxyl radical (PINO) to abstract hydrogens, and dialkyl azodicarboxylate acts as a trapping agent of the resultant carbon radical to generate the hydrazine derivatives. This C-H amination proceeds in a highly chemoselective manner with a wide applicability to functionalize benzylic, propargylic, and aliphatic C-H bonds. Furthermore, the obtained hydrazine compounds were readily converted to the corresponding carbamates or amines. Hence, the present protocol for direct introduction of the nitrogen functionality serves as a powerful tool for efficient construction of nitrogen-substituted natural products and pharmaceuticals.
Selective Functionalization of Hydrocarbons Using a ppm Bioinspired Molecular Tweezer via Proton-Coupled Electron Transfer
作者:Hongyu Chen、Lingling Wang、Sheng Xu、Xiaohui Liu、Qian He、Lijuan Song、Hongbing Ji