Facile Conversion of Alcohols to the Corresponding 2,2,2-Trifluoroethyl Esters with Molecular Iodine and Potassium Carbonate in 2,2,2-Trifluoroethanol
Facile oxidative conversion of alcohols to esters using molecular iodine
作者:Naoshi Mori、Hideo Togo
DOI:10.1016/j.tet.2005.03.097
日期:2005.6
A simple, efficient, and high-yield procedure for the oxidative conversion of alcohols to various types of esters and ketones, with molecular iodine and potassium carbonate was successfully carried out.
Concurrent pathways to explain solvent and substituent effects for solvolyses of benzoyl chlorides in ethanol-trifluoroethanol mixtures
作者:T. William Bentley、In Sun Koo
DOI:10.3998/ark.5550190.0013.703
日期:——
Rate constants are reported at 25 oC for solvolyses of p-Z-substituted benzoylchlorides (Z = O2N, Cl, H, Me, and MeO) in 2,2,2-trifluoroethanol (TFE) in binary mixtures with water or ethanol. Product selectivities (kTFE/kwater) are also reported. Previous work in which rate constants for solvolyses of benzoylchlorides are correlated with σ constants is re-evaluated. V-shaped plots (assuming concurrent
The methoxycarbonylation of aryl chlorides catalysed by palladium complexes of bis(di-tert-butylphosphinomethyl)benzene
作者:Cristina Jimenez-Rodriguez、Graham R. Eastham、David. J. Cole-Hamilton
DOI:10.1039/b501868d
日期:——
A catalyst system based on palladium-1,2-bis-(di-tert-butylphosphinomethyl)benzene (BDTBPMB) shows good activity for the methoxycarbonylation of strongly activated aryl chlorides, like 4-chloromethylbenzoate or 4-chlorocyanobenzene. Surprisingly, the use of less activated aryl chlorides, like 4-chloroacetophenone, leads to the formation of dimethyl terephthalate amongst other products arising from
Nucleus-fluorinated aromatic carboxylates and processes for their production
申请人:ASAHI GLASS COMPANY LTD.
公开号:EP0355774A2
公开(公告)日:1990-02-28
A process for producing nucleus-fluorinated aromatic carboxylates, which comprise nucleus-fluorinating aromatic carboxylates of the following formula (1) with a fluorinating agent to obtain nucleus-fluorinated aromatic carboxylates of the following formula (2):
wherein R¹ is an alkyl group, an aryl group or a fluoroalkyl group, each of A and B is at least one member selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, an aryl group and a fluoroalkyl group, and n and m are integers satisfying m + n = 6, provided that m is 1 or 2, provided that at least one A is an activated chlorine or bromine atom, and B corresponding to such an activated chlorine or bromine atom is a fluorine atom.
一种生产核-氟化芳香族羧酸盐的工艺,包括用氟化剂对下式(1)的芳香族羧酸盐进行核-氟化,得到下式(2)的核-氟化芳香族羧酸盐:
其中 R¹ 是烷基、芳基或氟烷基,A 和 B 中的每一个至少是选自氢原子、卤素原子、烷基、芳基和氟烷基组成的组中的一个成员,n 和 m 是满足 m + n = 6 的整数,条件是 m 是 1 或 2,条件是至少一个 A 是活化的氯原子或溴原子,与该活化的氯原子或溴原子对应的 B 是氟原子。
Acid-catalyzed reactions of 2,2,2-trifluorodiazoethane for analysis of functional groups by fluorine-19 nuclear magnetic resonance spectrometry