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1739-81-7

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1739-81-7 Usage

Derivative of imidazole

Five-membered ring structure This compound is a derivative of imidazole, which has a five-membered ring structure consisting of three carbon atoms and two nitrogen atoms.

Use as a building block and intermediate

Synthesis of pharmaceuticals, agrochemicals, and organic compounds 1H-Imidazole, 1,2,5-trimethylis commonly used as a building block and intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other organic compounds due to its unique chemical structure.

Applications in multiple fields

Medicine, organic chemistry, and materials science This compound has a wide range of applications in the fields of medicine, organic chemistry, and materials science, as its unique chemical structure and reactivity make it a valuable component in the development of new compounds and products.

Check Digit Verification of cas no

The CAS Registry Mumber 1739-81-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,3 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1739-81:
(6*1)+(5*7)+(4*3)+(3*9)+(2*8)+(1*1)=97
97 % 10 = 7
So 1739-81-7 is a valid CAS Registry Number.

1739-81-7Downstream Products

1739-81-7Relevant articles and documents

On the electronic impact of abnormal C4-bonding in n-heterocyclic carbene complexes

Heckenroth, Marion,Neels, Antonia,Garnier, Michael G.,Aebi, Philipp,Ehlers, Andreas W.,Albrecht, Martin

, p. 9375 - 9386 (2009)

Sterically similar palladium dicarbene complexes have been synthesized that comprise permethylated dicarbene ligands which bind the metal center either in a normal coordination mode via C2 or abnormally via C4. Due to the strong structural analogy of the complexes, differences in reactivity patterns may be attributed to the distinct electronic impact of normal versus abnormal carbene bonding, while stereoelectronic effects are negligible. Unique reactivity patterns have been identified for the abnormal carbene complexes, specifically upon reaction with Lewis acids and in oxidative addition-reductive elimination sequences. These reactivities as well as analytical investigations using X-ray diffraction and X-ray photoelectron spectros-copy indicate that the C4 bonding mode increases the electron density at the metal center substantially, classifying such C4-bound carbene ligands amongst the most basic neutral donors known thus far. A direct application of this enhanced electron density at the metal center is demonstrated by the catalytic H2 activation with abnormal carbene complexes under mild conditions, leading to a catalytic process for the hydrogenation of olefins.

Synthesis, Stability, and (De)hydrogenation Catalysis by Normal and Abnormal Alkene- And Picolyl-Tethered NHC Ruthenium Complexes

Malan, Frederick P.,Singleton, Eric,Van Rooyen, Petrus H.,Albrecht, Martin,Landman, Marilé

, p. 2624 - 2635 (2019/07/03)

A series of p-cymene and cyclopentadienyl Ru(II)-aNHC complexes were synthesized from 2-methylimidazolium salts with either an N-bound alkenyl (1, 3) or picolyl tether (6, 7). The C(5)-Me substituted alkenyl-tethered analogues (2, 4) were also synthesized. Ag-mediated C(2)-dealkylation was a prominent side reaction that led to the formation of normally bound NHC Ru(II) complexes, which in selected cases were isolated (5, 8). A C(4)- over C(2)-selectivity for ruthenium binding was established by protecting the C(2)-position with an iPr group on the imidazolium precursor, for which unique p-cymene (9) and cyclopentadienyl (10) Ru(II)-aNHC derivatives were synthesized. All complexes were applied in the transfer hydrogenation of ketones and in secondary alcohol oxidation, with higher catalytic activity for the p-cymene over the cyclopentadienyl systems, as well as the alkenyl- over the picolyl-containing aNHC complexes.

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