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702-23-8

702-23-8

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702-23-8 Usage

Chemical Properties

clear light brown liquid after melting

Uses

Different sources of media describe the Uses of 702-23-8 differently. You can refer to the following data:
1. 4-Methoxyphenethyl alcohol has a flavor and aroma of fresh citrus juice and may be used for perfumes, foods, and cosmetics.
2. 2-(4-Methoxyphenyl)ethanol is used as an internal standard in the fluorous biphasic catalysis reaction. It is used in the preparation of 4-(2-iodoethyl)phenol, by refluxing it with 47% hydriodic acid. It may be used in the preparation of (2R*,4R*)-1-n-butyl-2-methyl-4-(2-oxopyrrolidin-1-yl)-6-methoxy-1,2,3,4-tetrahydroquinoline and (2R*,4S*)-1-n-butyl-2-methyl-4-(2-oxopyrrolidin-1-yl)-6-methoxy-1,2,3,4- tetrahydroquinoline. It is used for foods, perfumes, and cosmetics.
3. 4-Methoxyphenethyl alcohol was used in the preparation of 4-(2-iodoethyl)phenol, by refluxing it with 47% hydriodic acid. It may be used in the preparation of (2R*,4R*)-1-n-butyl-2-methyl-4-(2-oxopyrrolidin-1-yl)-6-methoxy-1,2,3,4-tetrahydroquinoline and (2R*,4S*)-1-n-butyl-2-methyl-4-(2-oxopyrrolidin-1-yl)-6-methoxy-1,2,3,4- tetrahydroquinoline.

Synthesis Reference(s)

Journal of the American Chemical Society, 82, p. 3222, 1960 DOI: 10.1021/ja01497a062Tetrahedron Letters, 33, p. 7465, 1992 DOI: 10.1016/S0040-4039(00)60796-7

General Description

(R)-1-(4-methoxyphenyl)ethanol {(R)-MOPE, 4-Methoxyphenethyl alcohol, 1-(4-methoxyphenyl)ethanol } is formed during the biocatalytic anti-Prelog enantioselective reduction of 4-methoxyacetophenone (MOAP) using immobilized Trigonopsis variabilis AS2.

Check Digit Verification of cas no

The CAS Registry Mumber 702-23-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,0 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 702-23:
(5*7)+(4*0)+(3*2)+(2*2)+(1*3)=48
48 % 10 = 8
So 702-23-8 is a valid CAS Registry Number.
InChI:InChI=1/C9H12O2/c1-11-9-4-2-8(3-5-9)6-7-10/h2-5,10H,6-7H2,1H3

702-23-8 Well-known Company Product Price

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  • Alfa Aesar

  • (L06158)  2-(4-Methoxyphenyl)ethanol, 98%   

  • 702-23-8

  • 10g

  • 350.0CNY

  • Detail

  • Alfa Aesar

  • (L06158)  2-(4-Methoxyphenyl)ethanol, 98%   

  • 702-23-8

  • 50g

  • 1069.0CNY

  • Detail

702-23-8Relevant articles and documents

Formation and stability of the 4-methoxyphenonium ion in aqueous solution

Tsuji, Yutaka,Hara, Daisuke,Hagimoto, Rui,Richard, John P.

, p. 9568 - 9571 (2011)

The reaction of 2-methoxyphenylethyl tosylate (MeO-1-Ts) is first-order in [N3-]. A carbon-13 NMR analysis of the products of the reactions of MeO-1-[α-13C]Ts shows the formation of MeO-1-[β-13C]OH and MeO-1-[β-13C]N3 from the trapping of a symmetrical 4-methoxyphenonium ion reaction intermediate 2+. An analysis of the rate and product data provides a value of kaz/ks = 83 M- 1 for partitioning of 2 + between addition of azide ion and solvent. These data set a limit for the lifetime of 2+ in aqueous solution.

Borane evolution and its application to organic synthesis using the phase-vanishing method

Soga, Nene,Yoshiki, Tomo,Sato, Aoi,Kawamoto, Takuji,Ryu, Ilhyong,Matsubara, Hiroshi

supporting information, (2021/03/26)

Although borane is a useful reagent, it is difficult to handle. In this study, borane was generated in situ from NaBH4 or nBu4NBH4 with several oxidants using a phase-vanishing (PV) method. The borane generated was directly reacted with alkenes, affording the desired alcohols in good yields after oxidation with H2O2 under basic conditions. The selective reduction of carboxylic acids with the evolved borane was examined. The organoboranes generated by the PV method successfully underwent Suzuki–Miyaura coupling. Using this PV system, reactions with borane can be carried out easily and safely in a common test tube.

Evaluation of 2-(piperidine-1-yl)-ethyl (PIP) as a protecting group for phenols: Stability to ortho-lithiation conditions and boiling concentrated hydrobromic acid, orthogonality with most common protecting group classes, and deprotection via Cope elimination or by mild Lewis acids

Norén, Rolf

, (2021/04/07)

A new protecting group, 2-(piperidine-1-yl)-ethyl (PIP), was evaluated as a protecting group for phenols. The PIP group was stable to ortho-lithiation conditions and refluxing with concentrated hydrobromic acid. Deprotection was accomplished by two routes, oxidation to N-oxides followed by Cope elimination (CE) and subsequent hydrolysis or ozonolysis of the vinyl ether or one-step deprotection by BBr3?Me2S. The PIP group is orthogonal to the O-benzyl, O-acetyl, O-t-butyldiphenylsilyl, O-methyl, O-p-methoxybenzyl, O-allyl, O-tetrahydropyranyl and N-t-butoxy carbonyl groups. The CE step was systematically studied and was found to give higher yields when the reaction was performed in the presence of silylating agents.

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