The coupling of primary and secondary unactivated alkyl bromides with alkyl-Grignard reagents was performed in good yields under mild conditions by using a new catalytic system: consisting of cobalt chloride and tetramethylethylenediamine (CoCl2⋅2 LiI, 4 TMEDA). The reaction is very chemoselective since ketone, ester and nitrile functions are tolerated.
Pd/SAPO-41 Bifunctional Catalysts with Enhanced Pd Dispersion Prepared by Ultrasonic-Assisted Impregnation: High Selectivity for n-Hexadecane Hydroisomerization
AbstractThe preparation of bifunctional catalysts with high catalytic selectivity for the n-alkanes hydroisomerization still remains challenging for the production of bio-diesel. Herein, two series of Pd/SAPO-41 bifunctional catalysts are prepared by the ultrasonic-assisted impregnation (xPd/S41-U) with different treating time and conventional incipient wetness impregnation methods (0.30Pd/S41-I) on
Petrow et al., Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1959, p. 1091,1094;engl.Ausg.S.1053,1056
作者:Petrow et al.
DOI:——
日期:——
Brinkmann, Diss.<Karlsruhe 1957>S.18
作者:Brinkmann
DOI:——
日期:——
Radical deoxygenation of tertiary alcohols via trifluoroacetates
作者:Joong-Gon Kim、Dae Hyan Cho、Doo Ok Jang
DOI:10.1016/j.tetlet.2004.02.109
日期:2004.4
Trifluoroacetates of tertiaryalcohols undergo deoxygenation by Ph2SiH2 in the presence of (tBuO)2 in excellent yields of the deoxy products without affecting the stereochemistry at β-carbon.