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Cyclopentene, 1,5-diethenyl-, also known as 1,5-hexadiene or 1,5-hexadiene, is an organic compound with the chemical formula C6H10. It is a cyclic alkene with a five-membered ring and two double bonds, one at the 1st and the other at the 5th carbon atom. This molecule is a conjugated diene, which means the two double bonds are separated by a single bond, allowing for unique chemical reactivity. It is a colorless liquid with a pungent odor and is used as a building block in the synthesis of various organic compounds, such as polymers and pharmaceuticals. Due to its reactivity, it is often used in Diels-Alder reactions, a type of cycloaddition reaction that forms six-membered rings. Cyclopentene, 1,5-diethenyl- is also found in some natural products and can be produced through various chemical processes, including the dehydration of 1,5-hexanediol.

3641-77-8

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3641-77-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3641-77-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,4 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3641-77:
(6*3)+(5*6)+(4*4)+(3*1)+(2*7)+(1*7)=88
88 % 10 = 8
So 3641-77-8 is a valid CAS Registry Number.

3641-77-8Downstream Products

3641-77-8Relevant academic research and scientific papers

trans-Cycloalkenes. Part 11. trans-Cyclonona-1,2,6-triene, a Transient Precursor of 2,3-Divinylcyclopentene

Connel, A. Christopher,Whitham, Gordon H.

, p. 989 - 994 (2007/10/02)

Three potential precursors of trans-cyclonona-1,2,6-triene (1), namely the allene-dioxolan (7), the allene-oxathiolan (14), and the dichlorocyclopropane (16) have been prepared starting ultimately from cyclo-octa-1,5-diene.Treatment of these precursors with BunLi under conditions appropriate to each case gave 2,3-divinylcyclopentene in moderate to good yields.It is considered that trans-cyclonona-1,2,6-triene is formed as transient intermediate.

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