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139021-69-5

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139021-69-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139021-69-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,2 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139021-69:
(8*1)+(7*3)+(6*9)+(5*0)+(4*2)+(3*1)+(2*6)+(1*9)=115
115 % 10 = 5
So 139021-69-5 is a valid CAS Registry Number.

139021-69-5Relevant articles and documents

Stereoselective Dehydroxyboration of Allylic Alcohols to Access (E)-Allylboronates by a Combination of C-OH Cleavage and Boron Transfer under Iron Catalysis

Su, Wei,Wang, Ting-Ting,Tian, Xia,Han, Jian-Rong,Zhen, Xiao-Li,Fan, Shi-Ming,You, Ya-Xin,Zhang, Yu-Kun,Qiao, Rui-Xiao,Cheng, Qiushi,Liu, Shouxin

supporting information, p. 9094 - 9099 (2021/11/30)

Iron-catalyzed direct SN2′ dehydroxyboration of allylic alcohols has been developed to access (E)-stereoselective allylboronates. Allylic alcohols with diverse structures and functional groups, especially derived from natural products, underwent smooth transformation. The six-membered ring transition state formed by allylic alcohols and iron-boron intermediate was indicated to be the key component involved in transfer of the boron group, activation of the C-OH bond, and control of the stereoselectivity.

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