Pd(OAc)2/phosphonium tetrafluoroborates efficiently catalyzed Fukuyama coupling reaction with p-tolyl thioesters and 3-ethoxy-3-oxopropylzinc bromide which provide γ-oxo carboxylicesters under mild conditions. Pd(OAc)2/PCy3·HBF4 is the most effective catalyst and provides a direct method for synthesizing functionalized γ-oxo esters with high efficiency from readily accessible carboxylicacids as starting materials
Organomanganese(II) Reagents; X<sup>1</sup>. A Convenient Preparation of Various Acetoxyketones, Keto-nitriles, Keto-esters, Keto-acids, Diketones, and Heterocyclic Ketones (Acylheterocycles) via Acylation of Organomanganese(II) Reagents
作者:G. Friour、G. Cahiez、J. F. Normant
DOI:10.1055/s-1985-31101
日期:——
Budai, Z.; Mezei, T.; Lay, A., Acta Chimica Academiae Scientiarum Hungaricae, 1980, vol. <4> 105, p. 241 - 246
作者:Budai, Z.、Mezei, T.、Lay, A.
DOI:——
日期:——
Synthesis of certain unsubstituted, 9-exo-(dialkylaminomethyl)-, and 9-endo-(aralkyl)-tricyclo[5.2.1.02,6]decane-8-ketoxime esters and ethers with local anesthetic and analgesic activities
作者:M.Nabil Aboul-Enein、Aida El-Azzouny、Nevine A. Abdallah、Yousreya A. Maklad、Ola A. Saleh、M.Y. Ebeid
DOI:10.1016/s0014-827x(98)00008-1
日期:1998.3
The synthesis of series of unsubstituted, 9-exo-(dialkylaminomethyl)-, and 9-endo-(aralkyl)tricyclo [5.2.1.0(2,6)]decane-8-ketoximes esters and ethers 3a-j, 3a-d, 7a-j and 13a-d from the oxime synthons 2, 6a-e, 12a and 12b, respectively, is described. All the obtained compounds displayed noticeable local anesthetic potential. Among them, the oximino ether 4d (ED50 = 0.15 mg/kg) and the oximino ester 3a (ED50 = 0.23 mg/kg) are the most active of the series and possess higher potential than the reference standards. Some of the target compounds evoked analgesic effect, specially the oximino ether 7i which is the most potent of the series and is stronger than acetylsalicylic acid but weaker than morphine hydrochloride. (C) 1998 Elsevier Science S.A. All rights reserved.