solvolysis of 1-aryl-1-(trifluoromethyl)ethyl tosylates were determined in 80% aqueous ethanol for a series of substituents. The Brown ρ+σ+ treatment fails to give a simple linear plot, but all the p-π-donors deviate upward from the meta-correlation line. On the other hand, the Yukawa–Tsuno LArSR Eq. gives a linear correlation over the whole range of substituents, log(k⁄k0)=−6.287(σ°+1.388Δ\barσR+), with
1-芳基-1-(三氟甲基)乙基甲苯磺酸酯的溶剂分解速率在 80% 乙醇水溶液中测定一系列取代基。Brown ρ+σ+ 处理未能给出简单的线性图,但所有 p-π-供体都从元相关线向上偏离。另一方面,Yukawa-Tsuno LArSR Eq。在整个取代基范围内给出线性相关性,log(k⁄k0)=−6.287(σ°+1.388Δ\barσR+),具有出色的精度。α-CF3 对碳正离子中间体的强烈不稳定似乎仅反映在极高的 r 值上,而不反映在取代基效应的 ρ 值上。这与文献中基于简单布朗 σ+ 处理给出的该反应的结论严重冲突。该反应具有极高的共振需求 r=1.4,应该远远超出简单的 Brown σ+ 分析的范围。改变共振需求应该是充分描述关于共轭碳正离子反应的取代基效应的基本要求。
Efficient synthesis of [18F]trifluoromethane and its application in the synthesis of PET tracers
作者:Dion van der Born、J. (Koos) D. M. Herscheid、Romano V. A. Orru、Danielle J. Vugts
DOI:10.1039/c3cc37833k
日期:——
A new strategy towards [18F]trifluoromethyl-containing compounds is developed. [18F]trifluoromethane is synthesised in a fast and efficient manner and subsequently used in the reaction with aldehydes and ketones forming [18F]trifluoromethyl carbinols in good yields.
[EN] TRICYCLIC HETEROCYCLIC COMPOUNDS AND JAK INHIBITORS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES TRICYCLIQUES ET INHIBITEURS DE JAK
申请人:NISSAN CHEMICAL IND LTD
公开号:WO2013024895A1
公开(公告)日:2013-02-21
Novel tricyclic pyrimidine compounds and tricyclic pyridine compounds having JAK inhibitory activities are provided. A tricyclic heterocyclic compound represented by the formula (Ia): wherein the rings Aa and Ba, Xa, Ya, R1a, R2a, R3a, L1a, L2a, L3a and na are as defined in the description.
METHOD FOR PRODUCING PERFLUOROALKYL COMPOUND USING MONOHYDROPERFLUOROALKANE AS STARTING MATERIAL
申请人:Kanto Denka Kogyo Co., Ltd.
公开号:EP3495341A1
公开(公告)日:2019-06-12
A simple production process is provided of a perfluoroalkyl compound that uses monohydroperfluoroalkane as a starting material, the perfluoroalkyl compound being an important intermediate of organic electronic materials, medicine, agricultural chemicals, functional polymer materials and the like. With monohydroperfluoroalkane is reacted a base and then a carbonyl compound to produce an alcohol having a perfluoroalkyl group. For example, potassium hydroxide is made to interact with trifluoromethane, and a reaction with a carbonyl compound is induced to produce an alcohol having a trifluoromethyl group.
Preparation process of perfluoroalkyl compound with monohydroperfluoroalkane as starting material
申请人:KANTO DENKA KOGYO CO., LTD.
公开号:US10450253B2
公开(公告)日:2019-10-22
A simple production process is provided of a perfluoroalkyl compound that uses monohydroperfluoroalkane as a starting material, the perfluoroalkyl compound being an important intermediate of organic electronic materials, medicine, agricultural chemicals, functional polymer materials and the like. With monohydroperfluoroalkane is reacted a base and then a carbonyl compound to produce an alcohol having a perfluoroalkyl group. For example, potassium hydroxide is made to interact with trifluoromethane, and a reaction with a carbonyl compound is induced to produce an alcohol having a trifluoromethyl group.