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52544-88-4

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52544-88-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52544-88-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,5,4 and 4 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 52544-88:
(7*5)+(6*2)+(5*5)+(4*4)+(3*4)+(2*8)+(1*8)=124
124 % 10 = 4
So 52544-88-4 is a valid CAS Registry Number.

52544-88-4Relevant articles and documents

Dehydrative Thioglycosylation of 1-Hydroxyl Glycosides Catalyzed by In Situ-Generated AlI3

Weng, Shiue-Shien,Hsieh, Kun-Yi,Zeng, Zih-Jian

, p. 464 - 473 (2017)

Thioglycosylation of 1-hydroxyl glycosides catalyzed by in situ-generated AlI3 from elemental aluminium and molecular iodine has been developed. This method provides an alternative route to access anomeric thioglycosides without the use of hazard Lewis acidic activators or per-modified activated thiol sources. The major advantages of this dehydrative procedure are environmental friendly, ease of operation, high anomeric diastereoselectivity, and mild reaction conditions.

Transition-metal-free synthesis of aryl 1-thioglycosides with arynes at room temperature

Liao, Li-Hua,Liu, Yao,Yan, Nan,Yu, Xiao-Bing,Zhang, Xiang-Mei,Zhong, Qian

, p. 26666 - 26671 (2021/08/17)

A mild, convenient and transition-metal-free protocol for the synthesis of aryl 1-thioglycosides is presentedviaarynes generatedin situcombined with glycosyl thiols in the presence of TBAF(tBuOH)4. The methodology provides a general and efficient way to prepare a series of functionalized thioglycosides in good to excellent yields with a perfect control of the anomeric configuration at room temperature. In addition, the reaction conditions tolerate a variety of the pentoses and hexoses, and the reaction also performs smoothly on protected monosaccharides and disaccharides.

Highly diastereoselective thioglycosylation of functionalized peracetylated glycosides catalyzed by MoO2Cl2

Weng, Shiue-Shien,Lin, Yow-Dzer,Chen, Chien-Tien

, p. 5633 - 5636 (2007/10/03)

Among 18 oxometallic species, MoO2Cl2 was found to be the most reactive in catalytic thioglycosylation of O-acetylated glycosides with functionalized thiols in CH2Cl2, leading cleanly to 1,2-trans-thioglycosides with exclusive diastereocontrol. The new catalytic protocol is applicable to a monoglycoside building block and β-(1→6)-S-linked-thiodisaccharide synthesis.

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