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2-Propen-1-one, 3-methoxy-1-phenyl-, (2E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

40685-20-9

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40685-20-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40685-20-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,6,8 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 40685-20:
(7*4)+(6*0)+(5*6)+(4*8)+(3*5)+(2*2)+(1*0)=109
109 % 10 = 9
So 40685-20-9 is a valid CAS Registry Number.

40685-20-9Relevant academic research and scientific papers

Mild acetalisation of mono and dicarbonyl compounds catalysed by titanium tetrachloride. Facile synthesis of β-keto enol ethers

Clerici, Angelo,Pastori, Nadia,Porta, Ombretta

, p. 217 - 225 (2007/10/03)

The use of TiCl4, as a catalyst for the acetalisation, at room temperature, of carbonyl compounds is reported. Cyclic ketones and cyclic 1,4-diketones easily afford dimethyl acetals, but cyclic 1,3-diketones give β-keto enol ethers. Additionally, aryl ketones and acyclic ketones failed to react. β-keto aldehydes can be monoprotected either as β-keto enol ethers or β-keto dimethyl acetals depending on the reaction time and catalyst amount. Some mechanistic features are accounted for.

A convenient synthesis of masked β-ketoaldehydes by the controlled addition of nucleophiles to (trimethylsilyl)ethynyl ketones

Bromidge,Entwistle,Goldstein,Orlek

, p. 487 - 494 (2007/10/02)

The controlled addition of nucleophiles to (trimethylsilyl)ethynyl ketones provides a facile route to β-ketoacetals, β-alkoxy-α,β-unsaturated ketones or vinylogous amides depending on the choice of reaction conditions.

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