Selective Cleavage of Inert Aryl C–N Bonds in <i>N</i>-Aryl Amides
作者:Zhiguo Zhang、Dan Zheng、Yameng Wan、Guisheng Zhang、Jingjing Bi、Qingfeng Liu、Tongxin Liu、Lei Shi
DOI:10.1021/acs.joc.7b02880
日期:2018.2.2
A highly selective, IBX-promoted reaction has been developed for the oxidative cleavage of inertC(aryl)–N bonds on secondary amides while leaving the C(carbonyl)–N bond unchanged. This metal-free reaction proceeds under mild conditions (HFIP/H2O, 25 °C), providing facile access to various useful primary amides, some of which would be otherwise unattainable using conventional aminolysis and hydrolysis
已经开发出一种高度选择性的IBX促进的反应,用于氧化裂解仲酰胺上的惰性C(芳基)-N键,同时保持C(羰基)-N键不变。这种无金属的反应在温和的条件下(HFIP / H 2 O,25°C)进行,可以轻松获得各种有用的伯酰胺,而使用常规的氨解和水解方法则无法实现其中的某些。
CuO-decorated magnetite-reduced graphene oxide: a robust and promising heterogeneous catalyst for the oxidative amidation of methylarenes in water <i>via</i> benzylic sp<sup>3</sup> C–H activation
activity of the rGO/Fe3O4–CuO nanocomposite was probed in the direct oxidative amidation reaction of methylarenes with free amines. Various aromatic and aliphatic amides were prepared efficiently at room temperature from cheap raw chemicals using tert-butyl hydroperoxide (TBHP) as a “green” oxidant and low-toxicity TBAI in water. This method combines the oxidation of methylarenes and amide bond formation
Nickel-Catalyzed Reductive Addition of Aryl/Benzyl Halides and Pseudohalides to Carbodiimides for the Synthesis of Amides
作者:Farhad Panahi、Fereshteh Jamedi、Nasser Iranpoor
DOI:10.1002/ejoc.201501349
日期:2016.2
A Nickel-catalyzed reductive process is described for the directamidation of benzyl and aryl halides using carbodiimides as the amidating agent. Moreover, aryl and benzyl C–O electrophiles such as triflate, acetate, tosylate, trityl ether, and pivalate were converted into amides using this method. The in-situ-generated Ni0 acts as a catalyst for the reaction at room temperature for benzylic substrates
(cyanuric chloride or TCT) is introduced as a new amidating agent in Pd-catalyzed aminocarbonylation of aryl halides. In the presence of a catalytic amount of palladium and TCT/formamide reagent, a range of aryl halides (X = Cl, Br, I) were converted into amides efficiently in N,N-dimethylformamide at 120 °C.
Substituted cyclic amine compound, production process thereof and
申请人:Toa Eiyo, Ltd.
公开号:US05728835A1
公开(公告)日:1998-03-17
A substituted cyclic amine compound represented by the following general formula (1) ##STR1## wherein each of R.sup.1 to R.sup.5 represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group or the like, A represents a carbonyl group or a sulfonyl group, B represents a methine moiety or a nitrogen atom, D represents a methine moiety, a nitrogen atom or .dbd.N(.fwdarw.O)-- and n is an integer of 2 to 3; and synthetic methods thereof. The inventive compound is useful in preventing and treating circulatory organ-related diseases such as hypertension, ischemic heart disease, cerebrovascular disease, peripheral circulatory disease and the like.