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127707-63-5

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127707-63-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127707-63-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,7,0 and 7 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 127707-63:
(8*1)+(7*2)+(6*7)+(5*7)+(4*0)+(3*7)+(2*6)+(1*3)=135
135 % 10 = 5
So 127707-63-5 is a valid CAS Registry Number.

127707-63-5Relevant articles and documents

Bush,Finkbeiner

, p. 5903 (1968)

Catalytic application of zinc complex of oxygen depleted 1,3-bis(pyrazole)-p-tert-butylcalix[4]arene

Sinha, Anshu Kumar,Vigalok, Arkadi,Rawat, Varun

, p. 796 - 799 (2019)

In this paper we have described the synthesis and coordination properties of monometallic Zinc complex of oxygen depleted bis(pyrazole)-p-tert-butylcalix[4]arene ligand. We also present the catalytic activity of the Zinc–bis(pyrazole) complex, in acetylation of alcohols and lactide polymerization.

Efficient and regioselective ring-opening of epoxides with carboxylic acid catalyzed by graphite oxide

Mirza-Aghayan, Maryam,Tavana, Mahdieh Molaee,Niazi, Elaheh Golam Alipour,Boukherroub, Rabah

, p. 532 - 538 (2020/07/17)

An efficient, simple and regioselective ring-opening reaction of epoxides with various carboxylic acids under metal-free conditions is reported. The ring-opening of epoxides takes place in the presence of graphite oxide as an efficient and available catalyst to produce the corresponding 2-hydroxy monoester and 1,2-diester derivatives in good yields. Regioselective attack of the nucleo-phile, short reaction times, metal-free conditions and reusability of catalyst are among the advantages of the present protocol.

DBN-Catalyzed Regioselective Acylation of Carbohydrates and Diols in Ethyl Acetate

Ren, Bo,Zhang, Mengyao,Xu, Shijie,Gan, Lu,Zhang, Li,Tang, Lin

supporting information, p. 4757 - 4762 (2019/07/31)

The 1,5-diazabicyclo[4.3.0]non-5-ene (DBN)-catalyzed regioselective acylation of carbohydrates and diols in ethyl acetate has been developed. The hydroxyl groups can be selectively acylated by the corresponding anhydride in EtOAc in the presence of a catalytic amount (as low as 0.1 equiv.) of DBN at room temperature to 40 °C. This method avoids metal catalysts and toxic solvents, which makes it comparatively green and mild, and it uses less organic base compared with other selective acylation methods. Mechanism studies indicated that DBN could catalyze the selective acylation of hydroxyl moieties through a dual H-bonding interaction.

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