Triiodide-Mediated δ-Amination of Secondary C−H Bonds
作者:Ethan A. Wappes、Stacy C. Fosu、Trevor C. Chopko、David A. Nagib
DOI:10.1002/anie.201604704
日期:2016.8.16
amination of unactivated, secondary C−Hbonds to form a broad range of functionalized pyrrolidines has been developed by a triiodide (I3−)‐mediated strategy. By in situ 1) oxidation of sodium iodide and 2) sequestration of the transiently generated iodine (I2) as I3−, this approach precludes undesired I2‐mediated decomposition which can otherwise limit synthetic utility to only weak C(sp3)−H bonds. The mechanism
A tandem process for the synthesis of β-aminoboronic acids from aziridines with haloamine intermediates
作者:Subin Park、Jangwoo Koo、Weonjeong Kim、Hong Geun Lee
DOI:10.1039/d2cc00808d
日期:——
An unprecedented synthetic strategy is devised to generate β-aminoboronic acids from aziridines via a sequential process involving 1,2-iodoamine formation and radical borylation under light irradiation. A variety of aziridines including multiply substituted aziridines have been successfully employed as synthetic precursors, expanding their synthetic utility compared to previous methods. Mechanistic
Synthesis of aminoalcohols from substituted alkenes <i>via</i> tungstenooxaziridine catalysis
作者:Rufai Madiu、Brandon Dellosso、Erin L. Doran、Jenna M. Doran、Ali A. Pinarci、Tyler M. TenHoeve、Amari M. Howard、James L. Stroud、Dominic A. Rivera、Dylan A. Moskovitz、Steven J. Finneran、Alyssa N. Singer、Morgan E. Rossi、Gustavo Moura-Letts
DOI:10.1039/d4ob00022f
日期:——
stereospecificity. A catalytic cycle involving the formation of tungstenooxaziridine complex 1 as the active catalyst and hydrolysis of tungstenooxazolidine intermediate A as the rate-determining-step has been proposed. Initial kinetic and competition experiments provide evidence for the proposed mechanism.
Compounds of the formula
wherein X is various amino or imino acids and esters are disclosed. These compounds are useful as anti-hypertensive agents due to their angiotensin converting enzyme inhibition activity and depending upon the definition of X may also be useful as analgesics due to their enkephalinase inhibition activity.
式中的化合物
其中 X 为各种氨基酸或亚胺酸及酯类。由于具有血管紧张素转换酶抑制活性,这些化合物可用作抗高血压药,而且根据 X 的定义,由于具有脑啡肽酶抑制活性,这些化合物还可用作镇痛药。
Hot Water-Promoted Ring-Opening of Epoxides and Aziridines by Water and Other Nucleopliles
作者:Zhi Wang、Yong-Tao Cui、Zhao-Bing Xu、Jin Qu
DOI:10.1021/jo702401t
日期:2008.3.1
Effective hydrolysis of epoxides and aziridines was conducted by heating them in water at 60 or 100 degrees C. Other types of nucleophile such as amines, sodium azide, and thiophenol could also efficiently open epoxides and aziridines in hot water. It was proposed that hot water acted as a modest acid catalyst, reactant, and solvent in the hydrolysis reactions.