39814-88-5Relevant academic research and scientific papers
Interweaving Visible-Light and Iron Catalysis for Nitrene Formation and Transformation with Dioxazolones
Tang, Jing-Jing,Yu, Xiaoqiang,Wang, Yi,Yamamoto, Yoshinori,Bao, Ming
, p. 16426 - 16435 (2021/05/13)
Herein, visible-light-driven iron-catalyzed nitrene transfer reactions with dioxazolones for intermolecular C(sp3)-N, N=S, and N=P bond formation are described. These reactions occur with exogenous-ligand-free process and feature satisfactory to excellent yields (up to 99 %), an ample substrate scope (109 examples) under mild reaction conditions. In contrast to intramolecular C?H amidations strategies, an intermolecular regioselective C?H amidation via visible-light-induced nitrene transfer reactions is devised. Mechanistic studies indicate that the reaction proceeds via a radical pathway. Computational studies show that the decarboxylation of dioxazolone depends on the conversion of ground sextet state dioxazolone-bounding iron species to quartet spin state via visible-light irradiation.
Method for synthesizing phosphinimide compound
-
Paragraph 0152-0169, (2020/12/09)
The invention relates to a method for synthesizing a phosphonimide compound, and belongs to the field of metal catalytic organic synthesis. The method for synthesizing the phosphonimide compound comprises the following steps: adding an N-hydrocarbon acyloxy amide derivative, tertiary phosphine, a catalyst and an organic solvent into a reaction container, carrying out a reaction at a room temperature in an air atmosphere, and after the reaction is completed, carrying out post-treatment so as to obtain the phosphinimide compound. The method for synthesizing the phosphonimide compound disclosed by the invention has the following beneficial effects: (1) the range of a substrate is wide; (2) the catalyst is relatively low in price and less in usage amount; (3) the reaction operation is simple;and (4) the reaction yield is high, and high yield can still be obtained when the reaction is amplified to a gram level.
Novel method for constructing nitrogen-phosphorus double bonds through visible light catalysis
-
Paragraph 0039-0043, (2021/01/15)
The invention belongs to the technical field of medical and natural compound chemical intermediates and related chemistry, and relates to a novel method for constructing nitrogen-phosphorus double bonds through visible light catalysis. According to the in
Preparation method of iron-catalyzed phosphazene compound
-
Paragraph 0040-0041, (2019/06/12)
The invention belongs to the field of pharmaceutical and natural compound chemical intermediates and related chemical technologies, and relates to a preparation method of an iron-catalyzed phosphazenecompound. The preparation method comprises the steps th
Method for preparing ruthenium-catalyzed phosphoazene compound
-
Paragraph 0040-0041, (2019/06/12)
The invention belongs to the technical field of pharmaceutical and natural compound chemical intermediates and related chemistry, and relates to a method for preparing a ruthenium-catalyzed phosphoazene compound. The method includes the step that the phos
Preparation method of phosphorus nitrene compound catalyzed by cadmium sulfide
-
Paragraph 0040-0043, (2019/06/27)
The invention belongs to the technical field of medicine and natural compound chemical intermediate and related chemistry, and relates to a preparation method of a phosphorus nitrene compound catalyzed by cadmium sulfide. A phosphine compound and 3-substi
Unprecedented Transformation of a Directing Group Generated in Situ and Its Application in the One-Pot Synthesis of 2-Alkenyl Benzonitriles
Kumar, Ravi,Arigela, Rajesh K.,Kundu, Bijoy
, p. 11807 - 11812 (2015/08/11)
An unprecedented protocol for the transformation of benzoyl azides into benzonitrile derivatives via iminophosphoranes generated in situ is described. The strategy was successfully applied to the de-novo synthesis of 2-alkenylated benzonitrile derivatives from benzoyl azides through ortho CH activation/alkenylation followed by subsequent rearrangement. The salient features of this protocol involve incorporation of two important functionalities through cyanation and olefination in one pot under mild reaction conditions by using a less expensive Ru catalyst. The mechanism was established by isolating and characterising (using 31PNMR) an intermediate with two ortho functionalities, iminophosphorane and olefin, under specific reaction conditions. Directly functional! Cyanation and olefination was accomplished in one pot from benzoyl azides through an unprecedented directing group transformation. The method generates benzonitriles and can be used for the synthesis of 2-alkenylated benzonitrile derivatives (see scheme).
