1,3-偶极环加成反应因此也分为三类:一类是由1,3-偶极体出HOMO,称为HOMO控制的反应;一类是由1,3-偶极体出LUMO,称为LUMO控制的反应;还有一类就是两种情况都存在,称为(HOMO-LUMO)控制的反应。 1,3-偶极子(1,3-dipole)是三原子形成的4π电子化学...
1,3-偶极环加成反应(1,3-Dipolar Cycloaddition) 1,3-偶极环加成反应与狄尔斯-阿尔德反应有些相似。根据前线轨道理论,基态时1,3-偶极体的LUMO和亲偶极体的HOMO,以及基态时1,3-偶极体的HOMO和亲偶极体的LUMO,都是为分子轨道对称守恒原理所允许的,因此反应可以发生。1,3-偶极环加成反应因此也分为三类:一类是由...
reaction kinetics theory/ 1,3-dipolar cycloaddition mechanismhydrogen nitrylacetyleneelectron localization function studychemical bondsThe reaction between the simplest nitro compound HNO2 (hydrogen nitryl) and acetylene HCCH - formally proceeding via 1,3-dipolar cycloaddition - has been studied by means ...
1,3双极cycloaddition 翻译结果5复制译文编辑译文朗读译文返回顶部 1,3双极cycloaddition 相关内容 a他们好像已经互相认识了 They probably already mutually knew[translate] a我喜欢旅游,因为旅游能增长见识,培养了我适应不同环境的能力,快速学习的能力。 I like travelling, because travels can grow the experience, ...
Conceptual, Qualitative, and Quantitative Theories of 1,3‐Dipolar and Diels–Alder Cycloadditions Used in Synthesis The application and performance of conceptual and qualitative theories and quantitative quantum mechanical methods to the study of mechanism, reactivity, a... D Ess,G Jones,KÂ Houk ...
Nitrous Oxide as a 1,3-Dipole: A Theoretical Study of Its Cycloaddition Mechanism The 1,3-dipolar cycloadditions of nitrous oxide and substituted alkynes have been studied at the B3LYP/6-31G(d,p) level. The reaction is controlled by LUMO... Loc,Thanh,Nguyen,... - 《Journal of ...
9-trioxaundecane which is described to be a very useful hydrophilic linker compound.Homobifunctional PEG azide click chemistry linker. Azide functional groups will react via a copper catalyzed or strain promoted 1,3-dipolar cycloaddition click reaction with terminal alkynes and cyclooctyne derivatives to...
Huisgen,R.Steric Course and Mechanism of 1,3-Dipolar Cycloaddition. Advance in Cycloaddition . 1988R. Huisgen, “Steric Course and Mechanism of 1,3-Dipolar Cycloadditions,” in Advances in Cycloaddition (D. P. Curran, Ed.) 1988 , 1 , 11–31, Jai Press, Greenwich, CT....
1,3-Dipolar Cycloadditions 244 5.2.1 Dipolarophile and 1,3-Dipole 244 5.2.2 Analysis and Mechanism of 1,3-Dipolar Cycloadditions 247 5.2.3 Regioselectivity and Types of 1,3-Dipolar Cycloadditions 249 5.2.4 Reactivity of 1,3-Dipoles in Cycloadditions 250 5.2.5 Stereochemistry of...
These complexes undergo 1,3-dipolar cycloaddition reactions with dimethylacetylenedi- carboxylate (DAD) to produce trans isomers of LCo- (AcAc) 2X where X is the N(2)-bound 4,5-bis(methoxycarbonyl)-1,2,3-triazolate. The kinetics of these reactions have been investigated by infrared ...