The evidence for generation of dimethylaminocyanocarbene in the thermolysis of dimethylaminomalononitrile. The dimethylamino(dicyano- and cyano)methyl radicals, carbon analogs of the nitroxides
The methods for the preparation of O- and N-functional orthocarbonic acid derivatives are reviewed, and a survey of the reactions of these compounds with electrophilic and nucleophilic reagents is given. 1. Synthesis of Orthocarbonic Acid Esters 1.1 Reaction of Substituted Trichloromethanes with Alcohols, Alkoxides, Phenols, or Phenoxides 1.2. Reaction of Substituted Dichloromethanes with Alcohols or Phenols 1.3. Reaction of Trialkoxycarbenium Salts with Alkoxides 1.4. Reaction of Cyanic Acid Esters with Alcohols 1.5. Thermolysis of Cyclic Carbonic Acid Derivatives 1.6. Reaction of Carbon Disulfide with Thallium(I) Alkoxides 1.7. Reaction of Carbon Disulfide with Organotin Compounds 1.8. Reaction of Zinc Xanthates with Alcohols 1.9. Transesterification of Orthocarbonic Acid Esters 2. Synthesis of Orthocarbamic Acid Esters 2.1. Reaction of Trihetero-substituted Carbenium Ions with Alkoxides 2.2. Alcoholysis of Tetramethylurea Diethyl Acetal 2.3. Transesterification of Orthocarbamic Acid Esters 2.4. Spirocyclic Orthocarbamic Acid Esters from Organotin Compounds 3. Synthesis of Bis[dialkylamino]-dialkoxymethanes (Tetraalkylurea Dialkyl Acetals) 3.1. Reaction of Bis[dialkylamino]-ethoxycarbenium Tetrafluoroborates with Alkoxides 3.2. Reaction of Tetraalkylurea Dichlorides (Chloroformamidinium Chlorides) with Alcohols or Alkoxides 3.3. Reaction of 2,2-Dichloro-1,3-benzodioxole with Amines 3.4. Spirocyclic Urea Acetals from Organotin Compounds 4. Synthesis of Alkoxytris[dialkylamino]methanes 5. Synthesis of Tetrakis[dialkylamino]methanes 6. Reactions of O- and N-Functional Orthocarbonic Acid Derivatives 6.1. Reactions with Electrophilic Agents 6.2. Reactions with Nucleophilic Agents 6.3. Miscellaneous Reactions of Orthocarbonic Acid Derivatives
Chlorine dioxide oxidation of amines: synthetic utility and a biomimetic synthesis of elaeocarpidine
作者:Chien Kuang. Chen、Alfred G. Hortmann、Mohammad R. Marzabadi
DOI:10.1021/ja00222a052
日期:1988.7
Oxydation par ClO 2 d'amino-3 propanols-1 et d'ethanolamines et cyanation oxydante d'aminestertiaires, la fonction amine pouvant etre un heterocycle azote
氧化 par ClO 2 d'amino-3 propanols-1 et d'ethanolamines et cyanation oxydante d'amines tertiaires, la fonction amine pouvant etre unheterocycle azote
The compounds of this invention are novel imidoylureas having anthelmintic activity and imidoylthioureas having antifertility activity. They are prepared by the reaction of appropriate amidines with appropriate isocyanates or isothiocyanates.
Novel O-acylated amidoximes and substituted 1,2,4-oxadiazoles synthesised from (+)-ketopinic acid possessing potent virus-inhibiting activity against phylogenetically distinct influenza A viruses
作者:Vladimir V. Chernyshov、Olga I. Yarovaya、Iana L. Esaulkova、Ekaterina Sinegubova、Sophia S. Borisevich、Irina I. Popadyuk、Vladimir V. Zarubaev、Nariman F. Salakhutdinov
DOI:10.1016/j.bmcl.2021.128465
日期:2022.1
and for antiviral activity againstinfluenzaviruses of H1N1 and H7N9 subtypes. The synthesised compounds exhibited high virus-inhibiting activity against the H1N1influenzavirus. Some synthesised compounds were also active against the influenzavirus of a different antigenic subtype: H7N9. The mechanism of the virus-inhibiting activity of these compounds is based on their interference with the fusion
本文介绍了在杂环的第 5 位含有双环取代基的新型取代 1,2,4-恶二唑和 O-酰化偕胺肟作为其合成前体的合成和抗病毒活性评估。从(+)-樟脑衍生物(+)-酮辛酸中获得了新的化合物。化学文库进行了体外测试对 MDCK 细胞系的细胞毒性和对 H1N1 和 H7N9 亚型流感病毒的抗病毒活性。合成的化合物对 H1N1 流感病毒表现出高病毒抑制活性。一些合成的化合物对不同抗原亚型的流感病毒也有活性:H7N9。这些化合物的病毒抑制活性机制是基于它们干扰病毒血凝素(HA)的融合活性。已证明对 HA 的受体结合活性没有干扰。根据分子对接结果,O-酰化偕胺肟和1,2,4-恶二唑的选择性抗病毒活性与其结构特征有关。O-酰化偕胺肟可能与位于融合肽位点的结合位点更互补,并且 1,2, 4-恶二唑与位于蛋白水解位点的位点更互补。不同类型 HA 结合位点的氨基酸残基的显着差异使我们能够解释所研究化合物的选择性抗病毒活性。
Decarbonylative Synthesis of Aryl Nitriles from Aromatic Esters and Organocyanides by a Nickel Catalyst
作者:Junichiro Yamaguchi、Keiichiro Iizumi、Miki B. Kurosawa、Ryota Isshiki、Kei Muto
DOI:10.1055/s-0040-1705943
日期:2021.9
A decarbonylative cyanation of aromaticesters with aminoacetonitriles in the presence of a nickel catalyst was developed. The key to this reaction was the use of a thiophene-based diphosphine ligand, dcypt, permitting the synthesis of aryl nitrile without the generation of stoichiometric metal- or halogen-containing chemical wastes. A wide range of aromaticesters, including hetarenes and pharmaceutical