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(R,S)-NN-dimethyl-N-phenacyl-1-p-methoxyphenylethylammonium bromide is a complex organic compound with the molecular formula C21H26BrNO2. It is a chiral molecule, meaning it exists in two non-superimposable forms, R and S, which are mirror images of each other. The compound consists of a quaternary ammonium group, with two methyl groups attached to the nitrogen atom, and a phenacyl group (a phenyl-acetyl group) connected to the nitrogen. Additionally, it has a p-methoxyphenylethyl group attached to the nitrogen, which contributes to its unique structure. (R,S)-NN-dimethyl-N-phenacyl-1-p-methoxyphenylethylammonium bromide is often used in chemical research and as a reagent in various organic synthesis processes, particularly in the preparation of pharmaceuticals and other specialty chemicals. Its specific applications may vary depending on the desired end product and the chemical reactions it undergoes.

87305-45-1

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87305-45-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87305-45-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,3,0 and 5 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87305-45:
(7*8)+(6*7)+(5*3)+(4*0)+(3*5)+(2*4)+(1*5)=141
141 % 10 = 1
So 87305-45-1 is a valid CAS Registry Number.

87305-45-1Relevant academic research and scientific papers

Base Catalysed Rearrangements involving Ylide Intermediates. Part 15. The Machanism of the Stevens Rearrangement

Ollis, W. David,Rey, Max,Sutherland, Ian O.

, p. 1009 - 1027 (2007/10/02)

The Stevens rearrangement of acyl-stabilised ammonium ylides has been investigated with regard to stereoselectivity, intramolecularity and the formation of products in addition to the rearrangement product.A detailed study of the effects of reaction conditions upon the rearrangement of the ylide derived from the salt (13) has shown that the stereoselectivity (retention of the configuration of the chiral migrating group) and intramolecularity decrease as solvent viscosity decreases.The rearrangement of the salt (13) in water at 0 deg C is essentially intramolecular with virtually complete retention of the configuration of the migrating group.These results, together with the isolation of products that can be rationalised on the basis of random free-radical coupling, indicate that the rearrangement of acyl-stabilised ammonium ylides normally involves a radical pair mechanism.

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