Keto- Enol Tautomerism of 2-Hydroxy Naphthylideneaniline with Lanthanide Shift Reagent Pr(fod)<sub>3</sub>in Different Solvents
作者:L.M.N. SALEEM、R.H. SULTAN
DOI:10.13005/ojc/280313
日期:2012.9.18
Addition of LanthanideshiftreagentsPr(fod) 3 to 2-hydroxynaphthylideneaniline in non polar solvents and slightly polar solvent showed for the first time a keto-enol tautomerism. K T values= ([keto]/[enol]) were calculated in the chosen solvents. KT at fixed con centration of the shiftreagent was determined at different temperatures and the thermodynamic parameters (ΔH°, ΔG°, ΔS°) were obtained
Synthesis of <i>gem</i>-Difluorinated 2,3-Dihydrobenzofurans Using Freon-22 via [4 + 1] Annulation of Difluorocarbene and Antitumor Activity Evaluation
作者:Qianying Zhou、Mi Huang、Yongcun Shen、Zhenling Chen、Liying Xu、Zhigang Yang
DOI:10.1021/acs.orglett.4c00011
日期:2024.2.16
efficient assembly of valuable fluorinated 2,3-dihydrobenzofurans from the [4 + 1] annulation in good yields under basic conditions. The reliable practicability and scalability of the process have also been demonstrated by preparation at the multigram scale, late-stage modifications of pharmaceutical molecules, and potential antitumor potency.
Dwivedi, B. K.; Bhatnagar, Kiran; Srivastava, A. K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1987, vol. 26, # 7, p. 618 - 620
作者:Dwivedi, B. K.、Bhatnagar, Kiran、Srivastava, A. K.