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1,4-Naphtho-22-crown-6 is a cyclic polyether compound characterized by a naphthalene core and six oxygen atoms that form a crown-like structure. This chemical is a member of the crown ether family, which are known for their ability to form complexes with metal ions due to their oxygen-rich cavity. The specific arrangement of the naphthalene core and the crown ether structure in 1,4-naphtho-22-crown-6 enhances its selectivity for certain metal ions, making it a potentially useful compound in various applications such as ion transport, catalysis, and the design of sensors. Its unique structure also allows for specific interactions with metal ions, which can be exploited in the development of new materials and technologies.

72939-34-5

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72939-34-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72939-34-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,9,3 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 72939-34:
(7*7)+(6*2)+(5*9)+(4*3)+(3*9)+(2*3)+(1*4)=155
155 % 10 = 5
So 72939-34-5 is a valid CAS Registry Number.

72939-34-5Downstream Products

72939-34-5Relevant academic research and scientific papers

Synthesis of Crown Ethers That Geometrically Orient Cations Relative to a Naphthalene ? System. A Look at the Equilibration of Enantiomeric Conformations by "Rope-Skipping" Crown Ethers

Brown, Houston S.,Muenchausen, Chrysa P.,Sousa, Lynn R.

, p. 1682 - 1686 (1980)

A number of new naphthalene crown ethers were synthesized in moderate yield from the appropriate bis(halomethyl)naphthalenes and polyethylene glycols.The following crown ethers were synthesized: 2,3-naphtho-14-crown-4 (15percent), 2,3-naphtho-17-crown-5 (19percent), 2,3-naphtho-20-crown-6 (36percent), 1,8-naphtho-15-crown-4 (20percent), 1,8-naphtho-18-crown-5 (7percent), 1,8-naphtho-21-crown-6 (38percent), 1,2-naphtho-20-crown-6 (4percent), 1,5-naphtho-22-crown-6 (14percent), 1,5-naphtho-19-crown-5 (11percent), 1,4-naphtho-22-crown-6 (9percent), 1,3-naphtho-21-crown-6 (16percent).These crown compounds form a series in which complexed cations perturb the naphthalene ? system from different directions.Experimental evidence concerning the ease of equilibration of enantiomeric conformations by "rope-skipping" crown ethers is also reported.The equilibration of 1,5-naphtho-22-crown-6 enantiomeric conformations has about a 6.3-kcal energy of activation, while the corresponding barrier for 1,5-naphtho-19-crown-5 is greater than 21 kcal.

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