Cerium ammonium nitrate (CAN) for mild and efficient reagent to remove hydroxyethyl units from 2-hydroxyethyl ethers and 2-hydroxyethyl amines
摘要:
Cerium ammonium nitrate (CAN) removed hydroxyethyl units from 2-hydroxyethyl ethers and 2-hydroxyethyl amines to produce alcohols and amines in good yields. Especially, removal of the 2-hydroxyethyl ethers from C-2-symmetric diols, chiral 2,3-butanediol and chiral hydrobenzoin, was very useful for asymmetric syntheses using C-2-symmetric diols. The reactions using dual abilities of CAN, i.e., the ability for removal of the 2-hydroxyethyl unit and the ability for acetal hydrolysis by a single electron transfer, were also achieved Successfully. The reaction conditions were very mild and efficient, and many functional groups, which can be affected under normal conditions, were unaffected during the reaction. (c) 2006 Published by Elsevier Ltd.
Methyl α,α-dichloro-esters by oxidation-chlorination of cyclic acetals with trichloroisocyanuric acid
作者:Franco Bellesia、Monica Boni、Franco Ghelfi、Ugo M. Pagnoni
DOI:10.1016/s0040-4039(00)76672-x
日期:1994.5
Methyl α-chloro- or α,α-dichloro-esters are obtained in excellent yields by oxidation chlorination of 2-alkyl-4,5-dimethyl-1,3-dioxolanes with trichloroisocyanuric acid.
Bellesia Franco, Boni Monica, Ghelfi Franco, Pagnoni Ugo M., Tetrahedron Lett, 35 (1994) N 18, S 2961-2964
作者:Bellesia Franco, Boni Monica, Ghelfi Franco, Pagnoni Ugo M.
DOI:——
日期:——
Acetals by AlFe-pillared montmorillonite catalysis
作者:Maria Rita Cramarossa、Luca Forti、Franco Ghelfi
DOI:10.1016/s0040-4020(97)10049-7
日期:1997.11
AlFe-pillared montmorillonite is an efficient catalyst for acetalspreparation in CH2Cl2 at room temperature.
AlFe柱状蒙脱石是在室温下在CH 2 Cl 2中制备缩醛的有效催化剂。
Cerium ammonium nitrate (CAN) for mild and efficient reagent to remove hydroxyethyl units from 2-hydroxyethyl ethers and 2-hydroxyethyl amines
作者:Hiromichi Fujioka、Hideki Hirose、Yusuke Ohba、Kenichi Murai、Kenji Nakahara、Yasuyuki Kita
DOI:10.1016/j.tet.2006.11.004
日期:2007.1
Cerium ammonium nitrate (CAN) removed hydroxyethyl units from 2-hydroxyethyl ethers and 2-hydroxyethyl amines to produce alcohols and amines in good yields. Especially, removal of the 2-hydroxyethyl ethers from C-2-symmetric diols, chiral 2,3-butanediol and chiral hydrobenzoin, was very useful for asymmetric syntheses using C-2-symmetric diols. The reactions using dual abilities of CAN, i.e., the ability for removal of the 2-hydroxyethyl unit and the ability for acetal hydrolysis by a single electron transfer, were also achieved Successfully. The reaction conditions were very mild and efficient, and many functional groups, which can be affected under normal conditions, were unaffected during the reaction. (c) 2006 Published by Elsevier Ltd.