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52178-73-1

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52178-73-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52178-73-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,1,7 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 52178-73:
(7*5)+(6*2)+(5*1)+(4*7)+(3*8)+(2*7)+(1*3)=121
121 % 10 = 1
So 52178-73-1 is a valid CAS Registry Number.

52178-73-1Relevant articles and documents

A convenient access to allylic triflones with allenes and triflyl chloride in the presence of (EtO)2P(O)H

Ni, Jixiang,Jiang, Yong,An, Zhenyu,Lan, Jingfeng,Yan, Rulong

, p. 7343 - 7345 (2019/06/27)

A simple method for the preparation of allylic triflones from allenes and triflyl chloride in the presence of (EtO)2P(O)H has been developed. The features of this reaction are catalyst-free and simple starting substrates. This method tolerates diverse functional groups and substituted allylic triflones are obtained in moderate to good yields.

Copper-Catalyzed Enantio- and Diastereoselective Addition of Silicon Nucleophiles to 3,3-Disubstituted Cyclopropenes

Zhang, Liangliang,Oestreich, Martin

, p. 14304 - 14307 (2019/11/13)

A highly stereocontrolled syn-addition of silicon nucleophiles across cyclopropenes with two different geminal substituents at C3 is reported. Diastereomeric ratios are excellent throughout (d.r.≥98:2) and enantiomeric excesses usually higher than 90 %, even reaching 99 %. This copper-catalyzed C?Si bond formation closes the gap of the direct synthesis of α-chiral cyclopropylsilanes.

Construction of All-Carbon Chiral Quaternary Centers through CuI-Catalyzed Enantioselective Reductive Hydroxymethylation of 1,1-Disubstituted Allenes with CO2

Qiu, Jia,Gao, Shen,Li, Chaopeng,Zhang, Lei,Wang, Zheng,Wang, Xiaoming,Ding, Kuiling

supporting information, p. 13874 - 13878 (2019/11/11)

A catalytic enantioselective construction of all-carbon chiral quaternary centers through reductive hydroxymethylation of 1,1-disubstituted allenes with CO2 has been developed. In the presence of a copper/Mandyphos catalyst, CO2 is t

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