Unusual Inhibition Effect of 1-(1-Naphthyl)-1-methylethylhydroperoxide on the Liquid-Phase Oxidation of Isopropylarenes. GC−MS and Theoretical Studies of the Thermal Decomposition of 1-Naphthyl- and 1-Anthryl-1-methylethylhydroperoxides
have thus far never been described as thermaldecomposition products of 1-aryl-1-methylethylhydroperoxides. The plausible mechanism of the formation of 2-(1-aryloxy)propenes was proposed on the basis of AM-1 calculations of the possible rearrangement paths of the alkoxy radicals derived from the investigated hydroperoxides. The mechanism explains the inhibition effect of 1-(1-naphthyl)-1-methylethylhydroperoxide
Process for preparation of 2-anthryl and substituted 2-anthryl
申请人:Xerox Corporation
公开号:US04117239A1
公开(公告)日:1978-09-26
Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers. In the process for preparation of these monomers, an anthracenic reactant of the formula: ##STR1## wherein X and Y are independently selected from hydrogen, chlorine, bromine, alkyl of 1 to 4 carbon atoms or phenyl Is acylated in nitrobenzene under conditions which favor reaction at the two position. The resulting acylated product can then be (a) reacted with an alkylidenephosphorane (Wittig synthesis) or (b) reduced to the corresponding alcohol. Subsequent to such reduction, this alcohol can undergo further modification at the hydroxyl function to form a polymerizable addition monomer. Through the proper selection of the relative concentration of reactants and control over processing conditions, it is possible not only to prepare such monomers in high yields but also upon polymerization of such monomers, to obtain high molecular weight 2-anthryl and substituted 2-anthryl functional polymers (molecular weight of at least 10.sup.4). Polymers of such high molecular weight can readily be formed without the use of binders into self-supporting films. Such films are intrinsically photoconductive in the ultraviolet region of the electromagnetic spectrum and have good transport capabilities for charge carriers of both polarities.
Application of Halogen-Bonding Catalysis for Markovnikov-Type Hydrothiolation of Alkenes
作者:Zhankui Sun、Xue Zhang、Nuoyu Liang、Ruining Li
DOI:10.1055/a-1984-9105
日期:2023.3
Carbon–sulfur bond-formation reactions are applied widely in organic synthesis and chemical biology. Hydrothiolation of alkenes provides a direct way to build carbon–sulfur bonds. Most known methods proceed via radical processes and result in anti-Markovnikov-type products. Herein, we demonstrate that I2 catalyzes the hydrothiolation of alkenes and provides Markovnikov-type products in good to excellent
碳硫键形成反应在有机合成和化学生物学中有着广泛的应用。烯烃的氢硫醇化提供了建立碳硫键的直接方法。大多数已知方法通过激进过程进行并产生反马尔可夫尼科夫型产品。在此,我们证明 I 2催化烯烃的氢硫醇化反应,并以良好至优异的收率提供 Markovnikov 型产品。滴定研究表明硫醇被 I 2通过卤键激活。这种无金属反应具有绿色温和、功能耐受性高、底物适用范围广、原子经济等优点。它的应用在肽合成中得到进一步证明。
Observations on the Reactivities of Dienes, Especially toward Maleic Anhydride. II
作者:Felix Bergmann、Ernst Bergmann
DOI:10.1021/ja01864a018
日期:1940.7
Etienne,A. et al., Bulletin de la Societe Chimique de France, 1966, p. 2913 - 2919