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124988-64-3

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124988-64-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124988-64-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,9,8 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 124988-64:
(8*1)+(7*2)+(6*4)+(5*9)+(4*8)+(3*8)+(2*6)+(1*4)=163
163 % 10 = 3
So 124988-64-3 is a valid CAS Registry Number.

124988-64-3Relevant articles and documents

Enantioselective reduction of α-keto esters to 1,2-diols using the NaBH4/Me3SiCl system catalyzed by polymer-supported chiral sulfonamide

Wang, Guang-Yin,Hu, Jian-Bing,Zhao, Gang

, p. 807 - 810 (2004)

In the presence of 25mol% of a polymer-supported chiral sulfonamide, a variety of α-keto esters can be reduced into the corresponding 1,2-diols in good yields and high enantioselectivities using the NaBH4/Me 3SiCl reducing system.

Lewis Base Catalyzed Dioxygenation of Olefins with Hypervalent Iodine Reagents

Pan, Liangkun,Ke, Zhihai,Yeung, Ying-Yeung

, p. 8174 - 8178 (2021/10/25)

1,2-Diols are extremely useful building blocks in organic synthesis. Hypervalent iodine reagents are useful for the vicinal dihydroxylation of olefins to give 1,2-diols under metal-free conditions, but strongly acidic promoters are often required. Herein, we report a catalytic vicinal dioxygenation of olefins with hypervalent iodine reagents using Lewis bases as catalysts. The conditions are mild and compatible with various functional groups.

Iron-Catalyzed Diborylation of Unactivated Aliphatic gem-Dihalogenoalkenes: Synthesis of 1,2-Bis(boryl)alkanes

Feng, Zhang,Liu, Zhengli,Pu, Yu,Zhang, Xiaoming,Zhou, Shangsheng,Zhu, Jiang

, p. 5565 - 5570 (2021/07/31)

Herein, we report the first example of iron-catalyzed defluoroborylation of unactivated gem-difluoroalkenes, gem-dichloroalkenes, and gem-dibromoalkenes, providing the 1,2-bis(boryl)alkanes in moderate to good yield. This transformation has high regiosele

Site-Selective Mono-Oxidation of 1,2-Bis(boronates)

Yan, Lu,Morken, James P.

supporting information, p. 3760 - 3763 (2019/05/24)

Site-selective oxidation of vicinal bis(boronates) is accomplished through the use of trimethylamine N-oxide in 1-butanol solvent. The reaction occurs with good efficiency and selectivity across a range of substrates, providing 2-hydro-1-boronic esters which are shown to be versatile intermediates in the synthesis of chiral building blocks.

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