Mechanochemical Dimerization of Aldoximes to Furoxans
作者:Run-Kai Fang、Kuan Chen、Chuang Niu、Guan-Wu Wang
DOI:10.3390/molecules27082604
日期:——
environmentally friendly and cost-effective technology that is now widely used in the field of organic synthesis. The mechanochemical solvent-free synthesis of furoxans from aldoximes was achieved through dimerization of the in situ generated nitrile oxides in the presence of sodium chloride, Oxone and a base. A variety of furoxans was obtained with up to a 92% yield. The present protocol has the advantages of
[3 + 2] Cycloaddition of nitrile oxides to dichloropropenes and 1,3‐dichlorobut‐2‐ene: A regioselectivity issue
作者:Alexandra N. Shilova、Nina S. Shatokhina、Evgeniy V. Kondrashov
DOI:10.1002/jhet.4787
日期:2024.4
The reaction of nitrileoxides with 2,3-dichloroprop-1-ene, 1,3-dichloroprop-1-ene, and 1,3-dichlorobut-2-ene leads to 5-(chloromethyl)isoxazoles, 4-(chloromethyl)isoxazoles, or to mixtures of both regioisomers. The direction of cycloaddition and reactivity of substrate is determined by the steric hindrance at the terminal carbon atom of the alkene double bond. It has been found that the isomeric products
Dialkyl (3-aryl-1,2,4-oxadiazol-5-yl)phosphonates: synthesis and thermal behavior - evidence for monomeric alkyl metaphosphate
作者:Sushanta K. Das、S. N. Balasubrahmanyam
DOI:10.1021/jo00171a015
日期:1983.11
Syntheses based on nitrile oxides. 1. Reaction of aromatic nitrile oxides with N-cyanimides
作者:V. A. Ogurtsov、O. A. Rakitin、N. V. Obruchnikova、L. F. Chertanova、A. A. Gazikasheva、L. I. Khmel'nitskii
DOI:10.1007/bf00958257
日期:1990.9
The reaction of trialkylaminocyanimides with aromatic nitrile oxides leads to trialkylamino-(3-aryl-1,2,4-oxadiazol-5-yl)imides, while the corresponding reactions with sulfylcyanimines and phosphincyanimides do not take place. Using x-ray structural analysis the principal structural features of the 1,2,4-oxadiazole products have been elucidated.