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Benzenemethanol, α-[(diphenylarsino)methyl]-, also known as α-(diphenylarsino)benzyl alcohol or (diphenylarsino)methylbenzyl alcohol, is an organoarsenic compound with the chemical formula C15H15AsO. It is a colorless to pale yellow crystalline solid that is soluble in organic solvents. Benzenemethanol, a-[(diphenylarsino)methyl]- is characterized by the presence of a benzyl alcohol group (C6H5CH2OH) and a diphenylarsino group (As(C6H5)2). It is primarily used in the synthesis of various organoarsenic compounds and as a reagent in organic chemistry. Due to its potential toxicity and environmental impact, handling and disposal of this chemical should be done with caution and in accordance with proper safety guidelines.

4645-20-9

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4645-20-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4645-20-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,4 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4645-20:
(6*4)+(5*6)+(4*4)+(3*5)+(2*2)+(1*0)=89
89 % 10 = 9
So 4645-20-9 is a valid CAS Registry Number.

4645-20-9Downstream Products

4645-20-9Relevant academic research and scientific papers

New Reagents, XXXIV. (Diphenylarsino)methyllithium: Synthesis and Preparative Applications

Kauffmann, Thomas,Altepeter, Bruno,Klas, Norbert,Kriegesmann, Reinhard

, p. 2353 - 2364 (2007/10/02)

(Diphenylarsino)methyl iodide (3) was synthesized for the first time (76 percent). (Diphenylarsino)methyllithium (2), stable at 20 deg C, is accessible from 3 (ca. 100 percent) by iodine-lithium exchange with butyl- or phenyllithium and by organoelement-lithium exchange with butyllithium from diphenylarsane (4d; 92 percent). 2, prepared from 4d, gives far better yields of (diphenylarsino)alkanes by the reaction with alkyl halides than 2, obtained from 3.To the contrary, no difference is observed in the reactivity of 2 from 3 or 4d towards aldehydes and ketones.

New Reagents, XVIII. (Lithiomethyl)diphenylarsane Oxide; Synthesis and Application for the Indirect Nucleophilic Halomethylation

Kauffmann, Thomas,Fischer, Heinz,Woltermann, Annegret

, p. 645 - 653 (2007/10/02)

Due to its ready accessibility and high nucleophilicity (lithiomethyl)diphenylarsane oxide (2b) is a favorable reagent for the synthesis of many organoarsenic compounds.In organic synthesis it is recommendable as a reagent for indirect nucleophilic halomethylations (Hal = Cl, Br, I).

ALDEHYDSPEZIFISCHE UND ALDEHYDSELEKTIVE ALKYLIERUNGEN MIT ORGANONIOB- UND -TANTAL-REAGENZIEN (1)

Kauffmann, Thomas,Antfang, Elmar,Ennen, Beate,Klas, Norbert

, p. 2301 - 2304 (2007/10/02)

In competition experiments with n-heptanal and diethylketone as substrates the reagents (CH3)2M(OiPr)3, CH3-MCl4 (M = Nb, Ta), and n-Bu-NbCl4 react exclusively or very selectively with the aldehyde.

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