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2-Cyclobuten-1-one, 3-ethoxy-(7CI,8CI,9CI) is a chemical compound with the molecular formula C6H8O2. It is a derivative of cyclobutenone, featuring an ethoxy group attached to the 3-position. 2-Cyclobuten-1-one,3-ethoxy-(7CI,8CI,9CI) is characterized by its unique cyclobutenone ring structure and the presence of an oxygen atom in the form of a ketone group at the 1-position and an ether group at the 3-position. It is an organic compound that may be used in various chemical reactions and synthesis processes, particularly in the field of organic chemistry. Due to its specific structure, it can be a valuable intermediate in the preparation of more complex molecules or as a research tool in studying the properties of cyclobutenone derivatives.

4683-54-9

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4683-54-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4683-54-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,8 and 3 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4683-54:
(6*4)+(5*6)+(4*8)+(3*3)+(2*5)+(1*4)=109
109 % 10 = 9
So 4683-54-9 is a valid CAS Registry Number.

4683-54-9Relevant academic research and scientific papers

Retro-Ene Reactions in Acylallene Derivatives

Bibas, Herve,Koch, Rainer,Wentrup, Curt

, p. 2619 - 2626 (2007/10/03)

Allenic esters and amides 4 undergo a retro-ene reaction to vinylketene (6) and an aldehyde or imine (5) under the conditions of flash vacuum thermolysis (FVT). The same products are obtained by FVT of cyclobutenones 7 via electrocyclic ring opening to alkoxy- or aminovinylketenes 3 and 1,3-rearrangement of ketenes 3 to allenes 4. All the intermediates and products were characterized by matrix isolation IR spectroscopy, and in the case of 4c the reaction was also monitored by online mass spectrometry. A lower temperature for the retro-ene reaction of 4c, eliminating an imine, than for 4a, eliminating formaldehyde, is in agreement with a lower calculated activation barrier (167 and 181 kJ mol-1, respectively, at the G2(MP2,SVP) level of theory). The allenic amide 11 undergoes an analogous retro-ene reaction to the (unobserved) vinylketene 13, the latter isomerizing to cyclohexenylacrolein 16 in a 1,5-H shift (calculated barrier 125 kJ mol-1; G2 (MP2, SVP)).

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