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138668-19-6

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138668-19-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138668-19-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,6 and 8 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 138668-19:
(8*1)+(7*3)+(6*8)+(5*6)+(4*6)+(3*8)+(2*1)+(1*9)=166
166 % 10 = 6
So 138668-19-6 is a valid CAS Registry Number.

138668-19-6Downstream Products

138668-19-6Relevant articles and documents

Copper(II) arylhydrazone complexes as catalysts for C[sbnd]H activation in the Henry reaction in water

Ma, Zhen,Gurbanov, Atash V.,Maharramov, Abel M.,Guseinov, Firudin I.,Kopylovich, Maximilian N.,Zubkov, Fedor I.,Mahmudov, Kamran T.,Pombeiro, Armando J.L.

, p. 526 - 533 (2017)

Three new water-soluble copper(II) complexes [Cu(HL)(H2O){(CH3)2NCHO}] (1), [Cu(H2L)2(im)4]·CH3OH (2) and [Cu(HL)(CH3OH)]2(μ2-py) (3) were synthe

The Henry reaction catalyzed by NiII and CuII complexes bearing arylhydrazones of acetoacetanilide

Gurbanov, Atash V.,Hazra, Susanta,Maharramov, Abel M.,Zubkov, Fedor I.,Guseinov, Firudin I.,Pombeiro, Armando J.L.

, p. 48 - 53 (2018)

The new nickel coordination polymer [Ni(HL1) (CH3OH)2]n (1) and co-crystal H3L1?DMF (2) were obtained by reaction of NiCl2·2H2O with 2-(2-(1,3-dioxo-1-(phenylamino)but

A new cyclic binuclear Ni(II) complex as a catalyst towards nitroaldol (Henry) reaction

Sutradhar, Manas,Guedes Da Silva, M. Fátima C.,Pombeiro, Armando J.L.

, p. 103 - 106 (2014)

A new cyclic binuclear Ni(II) complex, [Ni2(H2L) 2] · 4MeOH (1), has been synthesized using the Schiff base N′1,N′3-bis(2-hydroxybenzylidene) malonohydrazide (H4L). The X-ray crystal struct

Inorganiceorganic hybrid double sulfates as catalysts of the diastereoselective nitroaldol reaction

Kammoun, Omar,Rekik, Walid,Bataille, Thierry,Mahmudov, Kamran T.,Kopylovich, Maximilian N.,Na?li, Houcine

, p. 136 - 140 (2013)

Bis(1-phenylethanaminium) disulfatotetraaquazincate(II) dihydrate (C 8H12N) 2 [Zn(H2O) 4 (SO4)2]2H2O (1), bis(1H-benzo[d]imidazolium) hexaaquazinc(II) bis(sulfate) tet

Metal-Organic Frameworks with Pyridyl-Based Isophthalic Acid and Their Catalytic Applications in Microwave Assisted Peroxidative Oxidation of Alcohols and Henry Reaction

Karmakar, Anirban,Martins, Luísa M. D. R. S.,Hazra, Susanta,Guedes Da Silva, M. Fátima C.,Pombeiro, Armando J. L.

, p. 1837 - 1849 (2016)

Reactions of 5-{(pyridin-4-ylmethyl)amino} isophthalic acid (H2L1) with copper(II), zinc(II), and cadmium(II) were studied, and the obtained metal-organic frameworks (MOFs) [{Cu(L1)(DMF)}·DMF·H2O]n (1), [Zn(L1)(H2/su

Synthesis, structure and catalytic applications of amidoterephthalate copper complexes in the diastereoselective Henry reaction in aqueous medium

Karmakar, Anirban,Hazra, Susanta,Guedes Da Silva, M. Ftima C.,Pombeiro, Armando J. L.

, p. 4837 - 4846 (2014)

Terephthalic acid derivatives bearing amide side functional groups, viz. 2-propionamidoterephthalic acid (H2L1) and 2-acetamidoterephthalic acid (H2L2), have been structurally characterized using X-ray crystallography. While H2

Kambe,Yasuda

, p. 1444,1445 (1968)

Fast nitroaldol reaction using powdered KOH in dry media

Ballini, Roberto,Bosica, Giovanna,Parrini, Mauro

, p. 1105 - 1106 (1999)

β-Nitroalkanols are easily obtained within a few minutes, through the nitroaldol (Henry) reaction, catalyzed by a stoichiometric amount of powdered potassium hydroxide, in dry media. Satisfactory to excellent yields are obtained both with primary and seco

Nitroaldol reaction catalyzed by arylhydrazone di- and triorganotin(IV) complexes

Gurbanov, Atash V.,Guedes da Silva, M.Fátima C.,Kustov, Leonid M.,Guseinov, Firudin I.,Mahmudov, Kamran T.,Pombeiro, Armando J.L.

, p. 98 - 101 (2018)

Two known organotin(IV) complexes, [Sn(C6H5)3HL1] (1, H2L1 = 2-(2-(2,4-dioxopentan-3-ylidene)hydrazinyl)benzoic acid) and [Sn(C2H5)2(1κO,2κO-H3L

Copper(II) coordination polymers of arylhydrazone of 1H-indene-1,3(2H)-dione linked by 4,4′-bipyridineor hexamethylenetetramine: Evaluation of catalytic activity in Henry reaction

Tiago, Gon?alo A.O.,Mahmudov, Kamran T.,Guedes da Silva, M. Fátima C.,Ribeiro, Ana P.C.,Huseynov, Fatali E.,Branco, Luís C.,Pombeiro, Armando J.L.

, p. 33 - 39 (2017/05/31)

The 1D and the 2D copper(II) coordination polymers [{Cu(κN,OO′-L)}2(μ-1κN:2κN′-bpy)2]n (1) and [{Cu(μ-1κN,OO′:2κO″-L)}2(μ-1κN:2κN′-hmt)]n (2), respectively, were synthesized from copper(II) nitrate and sodium 2-(2-(1,3-dioxo-1H-inden-2(3H)-ylidene) hydrazinyl)benzenesulfonate (NaHL), in the presence of 4,4′-bipyridine (4,4′-bpy) (for 1) or hexamethylenetetramine (hmt) (for 2). 1 and 2 are water soluble and are characterized by elemental analysis, IR spectroscopy, ESI-MS and single crystal X-ray diffraction. Depending on the neutral linkers, the dianionic ligand L2? displays tri- (in 1) or tetradentate (in 2) binding modes. The Cu2+ in 1 adopts a distorted N3O2 square-pyramid coordination environment, while in 2 it displays a distorted N2O3 trigonal bipyramid geometry. The catalytic activity of 1 and 2 was evaluated in the diastereoselective Henry reaction of nitroethane with a variety of aromatic and aliphatic aldehydes, in water and in organic solvents. β-Hydroxy nitroalkanes were obtained in high yields (up to 92%), and moderate-to-good syn/anti diastereoselectivities (up to 79:21), in water at room temperature.

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