chemoselective conjugate reduction of electron-deficient Michael acceptors, including alpha,beta-unsaturated ketones, carboxylic esters, nitriles and nitro compounds with PMHS in the presence of catalytic B(C6F5)3 is described.
A convenient method for the synthesis of fluorinated α-cyanoacetates<i>via</i>phase-transfer catalysis
作者:Kavita Jain、Kalpataru Das
DOI:10.1080/00397911.2018.1473442
日期:2018.8.3
Abstract A simple and convenientmethod for the synthesis of fluorinated α-cyanoacetate derivatives has been developed by using electrophilic fluorination of allyl and benzyl substituted α-cyanoacetates with N-fluorobenzensulfonimide (NFSI) as electrophilic fluorinating agent via phase transfer catalysis. The reaction is transition metal free and carried out in aqueous and mild reaction conditions
Remarkably Selective Reduction of the α,β-Carbon−Carbon Double Bond in Highly Activated α,β,γ,δ-Unsaturated Alkenes by the InCl<sub>3</sub>−NaBH<sub>4</sub> Reagent System
作者:Brindaban C. Ranu、Sampak Samanta
DOI:10.1021/jo0347821
日期:2003.9.1
A combination of sodium borohydride and a catalytic amount of indium(III) chloride in acetonitrile reduces exclusively the alpha,beta-carbon-carbon double bond in alpha,beta,gamma,delta-unsaturated diaryl ketones, dicarboxylic ester, cyano-ester, and dicyano compounds.
BACHI, MARIO D.;LASANOW, DANIEL G., SYNLETT,(1990) N, C. 551-553
作者:BACHI, MARIO D.、LASANOW, DANIEL G.
DOI:——
日期:——
THE SYNTHESIS AND ULTRAVIOLET SPECTRA OF SOME PYRAZOLONES
作者:Paul E. Gagnon、Jean L. Boivin、Paul A. Boivin、R. Norman Jones
DOI:10.1139/v51-023
日期:1951.2.1
phenylhydrazine and semicarbazide. 4-Benzyl-3-amino-1-phenyl-5-pyrazolone has been synthesized and its properties have been compared with those of the corresponding 2-phenylpyrazolone derivative. The ultraviolet absorption spectra of several pyrazolones have been determined.