196953-04-5 Usage
General Description
2,3-Butadien-1-one, 1-(2-bromophenyl)-, also known as 1-(2-bromophenyl)-3-buten-2-one, is a chemical compound with the molecular formula C10H9BrO. It is a yellow liquid that is commonly used as an intermediate in the synthesis of various pharmaceuticals and organic compounds. This chemical is also used as a reagent in organic synthesis, especially in the production of fine chemicals. It is important to handle this compound with caution, as it is known to be a potential irritant to the skin, eyes, and respiratory system, and should only be used in a well-ventilated area with appropriate personal protective equipment.
Check Digit Verification of cas no
The CAS Registry Mumber 196953-04-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,6,9,5 and 3 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 196953-04:
(8*1)+(7*9)+(6*6)+(5*9)+(4*5)+(3*3)+(2*0)+(1*4)=185
185 % 10 = 5
So 196953-04-5 is a valid CAS Registry Number.
196953-04-5Relevant articles and documents
Indium-mediated highly regioselective reaction of prop-2-ynyl bromides with acyl cyanides in aqueous media: A convenient synthesis of allenic and propargylic ketones
Yoo, Byung-Woo,Lee, Sung-Jae,Choi, Kwang-Hyun,Keum, Sam-Rok,Ko, Jae-Jung,Choi, Kyung-Il,Kim, Joong-Hyup
, p. 7287 - 7289 (2001)
Indium-mediated reaction of acyl cyanides 1 with prop-2-ynyl bromides 2 in aqueous media occurs regioselectively to afford either allenic 3 or propargylic ketones 4 depending on the γ-substituent of the prop-2-ynyl bromide under the mild conditions.
Allenyl ketones as versatile Michael acceptors for the addition of chelated enolates
Lucas, Simon,Kazmaier, Uii
, p. 255 - 258 (2007/10/03)
Chelated amino acid ester enolates undergo clean 1,4-addition towards allenyl ketones 9, giving rise to unsaturated δ-keto amino acid esters 12 at low temperature. If the reaction is allowed to warm to room temperature, the enolate intermediates A undergo
