Skip to Content
Merck
  • A highly negatively charged γ-Keggin germanodecatungstate efficient for Knoevenagel condensation.

A highly negatively charged γ-Keggin germanodecatungstate efficient for Knoevenagel condensation.

Chemical communications (Cambridge, England) (2012-07-14)
Kosei Sugahara, Toshihiro Kimura, Keigo Kamata, Kazuya Yamaguchi, Noritaka Mizuno
PMID22790486
ABSTRACT

A tetra-n-butylammonium (TBA) salt of a γ-Keggin -6-charged germanodecatungstate, [γ-H(2)GeW(10)O(36)](6-) (I), could act as an efficient homogeneous catalyst for Knoevenagel condensation of active methylene compounds with carbonyl compounds.

MATERIALS
Product Number
Brand
Product Description
86893
Supelco
Tetrabutylammonium perchlorate, for electrochemical analysis, ≥99.0%
Pricing and availability is not currently available.
86885
Sigma-Aldrich
Tetrabutylammonium perchlorate, ≥95.0% (T)
Pricing and availability is not currently available.
86880
Sigma-Aldrich
Tetrabutylammonium hydroxide solution, technical, ~40% in H2O (~1.5 M)
Pricing and availability is not currently available.
178780
Sigma-Aldrich
Tetrabutylammonium hydroxide solution, 40 wt. % in H2O
Pricing and availability is not currently available.
86863
Sigma-Aldrich
Tetrabutylammonium hydroxide solution, 53.5-56.5% in H2O
Pricing and availability is not currently available.
268100
Sigma-Aldrich
Tetrabutylammonium phosphate monobasic solution, 1.0 M in H2O
Pricing and availability is not currently available.
358665
Sigma-Aldrich
Tetrabutylammonium cyanide, 95%
Pricing and availability is not currently available.
155837
Sigma-Aldrich
Tetrabutylammonium hydrogensulfate, 97%
Pricing and availability is not currently available.
230189
Sigma-Aldrich
Tetrabutylammonium hydroxide solution, 1.0 M in methanol
Pricing and availability is not currently available.
86854
Supelco
Tetrabutylammonium hydroxide solution, ~40% in water, suitable for ion chromatography
Pricing and availability is not currently available.
79989
Sigma-Aldrich
Tetrabutylammonium cyanide, technical, ≥80%
Pricing and availability is not currently available.
86833
Sigma-Aldrich
Tetrabutylammonium phosphate monobasic, puriss., 99% (T)
Pricing and availability is not currently available.
86857
Supelco
Tetrabutylammonium bromide, suitable for ion pair chromatography, LiChropur™, ≥99.0%
Pricing and availability is not currently available.
86870
Sigma-Aldrich
Tetrabutylammonium chloride, ≥97.0% (NT)
Pricing and availability is not currently available.
86868
Sigma-Aldrich
Tetrabutylammonium bisulfate, puriss., ≥99.0% (T)
Pricing and availability is not currently available.
98479
Supelco
Tetrabutylammonium bisulfate solution, suitable for ion pair chromatography, LiChropur™, concentrate, ampule
Pricing and availability is not currently available.
86890
Sigma-Aldrich
Tetrabutylammonium iodide, ≥99.0% (AT)
Pricing and availability is not currently available.
86903
Supelco
Tetrabutylammonium iodide, suitable for ion pair chromatography, LiChropur™, ≥99.0%
Pricing and availability is not currently available.
140775
Sigma-Aldrich
Tetrabutylammonium iodide, reagent grade, 98%
Pricing and availability is not currently available.
193119
Sigma-Aldrich
Tetrabutylammonium bromide, ReagentPlus®, ≥99.0%
Pricing and availability is not currently available.
462144
Sigma-Aldrich
Tetrabutylammonium bromide solution, 50 wt. % in H2O
Pricing and availability is not currently available.
216143
Sigma-Aldrich
Tetrabutylammonium fluoride solution, 1.0 M in THF
Pricing and availability is not currently available.
86853
Supelco
Tetrabutylammonium bisulfate, suitable for ion pair chromatography, LiChropur™, ≥99.0%
Pricing and availability is not currently available.
86852
Supelco
Tetrabutylammonium chloride, suitable for ion pair chromatography, LiChropur™, ≥99.0%
Pricing and availability is not currently available.
361399
Sigma-Aldrich
Tetrabutylammonium fluoride solution, 75 wt. % in H2O
Pricing and availability is not currently available.
359173
Sigma-Aldrich
Tetrabutylammonium nitrate, 97%
Pricing and availability is not currently available.
426288
Sigma-Aldrich
Tetrabutylammonium bromide, ACS reagent, ≥98.0%
Pricing and availability is not currently available.
72453
Sigma-Aldrich
Tetrabutylammonium bisulfate solution, ~55% in H2O
Pricing and availability is not currently available.
651664
Sigma-Aldrich
Tetrabutylammonium azide
Pricing and availability is not currently available.