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2-Naphthalenol, 7,8-dimethoxy- is an organic compound with the chemical formula C12H12O3. It is a derivative of naphthalene, a polycyclic aromatic hydrocarbon, and features two methoxy groups attached to the 7th and 8th carbon atoms, as well as a hydroxyl group at the 2nd carbon position. This yellow crystalline solid is soluble in organic solvents and has a melting point of approximately 95-97°C. It is primarily used as an intermediate in the synthesis of various pharmaceuticals, agrochemicals, and dyes. Due to its potential applications and chemical properties, 2-naphthol, 7,8-dimethoxy- has garnered interest in the fields of organic chemistry and material science.

2283-56-9

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2283-56-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2283-56-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,8 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 2283-56:
(6*2)+(5*2)+(4*8)+(3*3)+(2*5)+(1*6)=79
79 % 10 = 9
So 2283-56-9 is a valid CAS Registry Number.

2283-56-9Relevant academic research and scientific papers

Construction of Sulfonyl Dihydrobenzo[ c]xanthen-7-ones Core via NH4OAc/PdCl2/CuCl2-Mediated Double Cyclocondensation of α-Sulfonyl o-Hydroxyacetophenones with 2-Allylbenzaldehydes

Hsueh, Nai-Chen,Tsai, Min-Chen,Chang, Meng-Yang,Chen, Hsing-Yin

, p. 15915 - 15925 (2019)

NH4OAc/PdCl2/CuCl2 mediated domino double cyclocondensation of α-sulfonyl o-hydroxyacetophenones and 2-allylbenzaldehydes provides tetracyclic sulfonyl dihydrobenzo[c]xanthen-7-one core with good to excellent yields in MeOH. The intermediates contain a 3-sulfonyl flavanone motif. Only water is generated as a byproduct. The use of various catalysts and reaction conditions is studied for the facile-operational conversion.

One-pot access to 2-naphthols and benzofurans via the aerobic Wacker-type oxidation/intramolecular aldol cyclization

Chang, Meng-Yang,Chan, Chieh-Kai,Lin, Shin-Ying

, p. 1532 - 1538 (2013/02/25)

An aerobic Wacker-type oxidation/intramolecular aldol cyclization synthetic route toward two oxygenated 2-naphthols 3 and benzofurans 4 starting with skeleton 2 with good yields is described. The route has been carried by the one-pot transformation of the regioselective PdCl2/CuCl 2-mediated Wacker oxidative cyclization of skeleton 2 with molecular oxygen under the alkaline methanolic condition. Skeleton 2 was prepared from skeleton 1 in moderate total yields via the known protocol.

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