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40932-28-3

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40932-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40932-28-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,9,3 and 2 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 40932-28:
(7*4)+(6*0)+(5*9)+(4*3)+(3*2)+(2*2)+(1*8)=103
103 % 10 = 3
So 40932-28-3 is a valid CAS Registry Number.

40932-28-3Relevant academic research and scientific papers

Enantioselective Henry reaction catalyzed by a C2-symmetric bis(oxazoline)-Cu(OAc)2·H2O complex

Ginotra, Sandeep K.,Singh, Vinod K.

, p. 3932 - 3937 (2008/09/21)

A C2-symmetric diethyl iPr-bis(oxazoline)-Cu(OAc) 2·H2O was found to be an efficient catalyst for catalyzing an enantioselective Henry reaction between nitromethane and various aldehydes to provide β-hydroxy nit

Synthesis of a tetraamido macrocycle ligand from a novel diamidodiol

-

Page column 8, (2010/02/05)

A new composition of matter for a diamidodiol and a method for preparing the diamidodiol. The exemplary diamidodiol has the formula C15H30N2O4 and is prepared by reacting a first quantity of 2-amino-2-methyl-1-propanol with a second quantity of a di-substituted malonyl dichloride (i.e., diethylmalonyl dichloride), preferably in ethyl acetate as solvent. A tetraamido macrocycle is prepared from the diamidodiol in two steps by oxidizing the diamidodiol to form a diacid followed by coupling using a known procedure of the diacid with an aryl diamine (e.g., 1,2-diaminobenzene) to yield the tetraamido macrocycle.

Synthesis of a tetraamido macrocycle ligand from a novel diamidodiol

-

, (2008/06/13)

A new composition of matter for a diamidodiol and a method for preparing the diamidodiol. The exemplary diamidodiol has the formula C15H30N2O4and is prepared by reacting a first quantity of 2-amino-2-methyl-1-pr

Synthesis, structure, and nucleophile-induced rearrangements of spiroketones

Maslak, Przemyslaw,Varadarajan, Sridhar,Burkey, Jeffrey D.

, p. 8201 - 8209 (2007/10/03)

Three tetraketones based on the 2,2'-spirobiindan-1,1',3,3'-tetraone skeleton were prepared and investigated. All three compounds show spiroconjugation between their perpendicular π-networks. The interaction results in lowering of the energy of the LUMO of the systems by ca. 0.2-0.3 eV as compared to non-spiroconjugated models. The spiroketones are susceptible to nucleophile-induced retro-Claisen condensations that lead to molecular rearrangements destroying spiro connectivity.

Role of Substituents in Copper(II) Extraction with N,N'-Bis(8-quinolyl)malonamides

Hirose, Takuji,Hiratani, Kazuhisa,Kasuga, Kazuyuki,Saito, Kiyoshi,Koike, Tohru,et al.

, p. 2679 - 2684 (2007/10/02)

It has been found that substituents on N,N'-bis (8-quinolyl)malonamide play an important role in copper(II) extraction: among the substituents studied, benzyl groups dramatically increased extractability of the malonamide complex.The role of substituents is discussed on the basis of the results of titration and 1H NMR measurements of copper(II) or nickel(II) complexes as well as copper(II)-extraction experiments.Intramolecular interactions between ? electrons of the benzyl group and the metal centre of the complex are proposed to occur.

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