Ferrihydrite silica aerogels containing 11–13% iron and a surface area of 500–600 m2/g are catalysts for the title reactions. They are recovered and reused without loss of activity.
含有11-13%的铁和500-600 m 2 / g表面积的三水铁硅石气凝胶是标题反应的催化剂。它们可以被回收并重新使用而不会损失活动。
Diels, Justus Liebigs Annalen der Chemie, 1922, vol. 429, p. 54
作者:Diels
DOI:——
日期:——
Nickel-catalyzed Michael additions of .beta.-dicarbonyls
作者:John H. Nelson、Peter N. Howells、George C. DeLullo、George L. Landen、Ronald A. Henry
DOI:10.1021/jo01295a017
日期:1980.3
Diels, Chemische Berichte, 1922, vol. 55, p. 1528
作者:Diels
DOI:——
日期:——
Conjugate addition to diethyl azodicarboxylate under organic-perfluorinated biphasic homogeneous catalysis by nickel(II) species
The nickel(II) complex of the Schiff base of salicylaldehyde and 4-perfluorodecylaniline catalyzes the conjugate addition of beta-diketones to electron-deficient substrates. Electrophilic amination with azodicarboxylate affords quaternary centers. The catalyst is recovered in solution and reutilized. Isolation of reaction products is very simple and does not require chromatography. (C) 2000 Elsevier Science Ltd. All rights reserved.