Photocatalytic amidation and esterification with perfluoroalkyl iodide
作者:Yelan Xiao、Yuen-Kiu Chun、Shun-Cheung Cheng、Chi-On Ng、Man-Kit Tse、Ngai-Yu Lei、Ruoyang Liu、Chi-Chiu Ko
DOI:10.1039/d0cy01419b
日期:——
The successful generation of perfluoroalkyl radicals (Rf˙) through photoredox catalysis has inspired us to investigate the preparation of various organofluorine species. In this work, visible light-induced photocatalytic reactions for the preparation of perfluoroalkyl amides and esters from the corresponding amines and alcohols using different types of triplet emitters as photocatalysts have been studied
Hexamethyldisilazane as an Acylation Generator for Perfluorocarboxylic Acids in Quantitative Derivatization of Primary Phenylalkyl Amines Confirmed by GC/MS and Computations
derivatization processes were determined by gas chromatography/mass spectrometry. Reaction conditions were optimized depending on reagents’ molar ratios, solvents, and temperatures applied. The new acylation method, in comparison to the traditional ones, obtained with trifluoroacetic anhydride, heptafluorobutyric anhydride, and N-methyl-bis(trifluoroacetamide), offers numerous advantages. Derivatives
Sigmatropic isomerizations in 2-aza-allylic systems. Part X. Prototropic and chlorotropic rearrangements in fluoroalkyl- substituted 1,3-dichloro-imines
The photochemical chlorination of N-benzylimidoyl chlorides RC(CI)=NCH2Ph (R=CF3, CFCI2, C3F7, tBu, Ar) results in RC(CI)=NCH(CI)Ph or its mixture with isomeric RCCI2N=CHPh depending on the nature of the substituent R. 1,3-Prototropic and 1,3-chlorotropic rearrangements in the chlorination products have been observed and investigated.
N-苄基亚氨基酰氯RC(CI)= NCH 2 Ph(R = CF 3,CFCI 2,C 3 F 7,t Bu,Ar)的光化学氯化导致RC(CI)= NCH(CI)Ph或其混合物取决于取代基R的性质,其具有RCCI 2 N = CHPh的异构体。已经观察到并研究了氯化产物中的1,3-丙酸和1,3-氯酸重排。
CYANOACRYLATE-BASED BIO-ADHESIVE COMPOSITION
申请人:Kim Dong Jin
公开号:US20130225640A1
公开(公告)日:2013-08-29
The present invention relates to a cyanoacrylate-based bio-adhesive composition, and aims to provide a cyanoacrylate-based bio-adhesive composition having an excellent biodegradability and anti-bacterial effect. The present invention provides a cyanoacrylate-based bio-adhesive composition having an enhanced biodegradability by using, as a thickening agent, poly octyl cyanoacrylate generated as a byproduct when preparing octyl cyanoacrylate, and having an excellent anti-bacterial effect by using 3,5-diiodo-4-pyridone-1-acetic acid as an anion stabilizer.