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33984-97-3

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33984-97-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33984-97-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,9,8 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33984-97:
(7*3)+(6*3)+(5*9)+(4*8)+(3*4)+(2*9)+(1*7)=153
153 % 10 = 3
So 33984-97-3 is a valid CAS Registry Number.

33984-97-3Relevant articles and documents

BF3·OEt2-promoted tandem Meinwald rearrangement and nucleophilic substitution of oxiranecarbonitriles

Xu, Chuangchuang,Xu, Jiaxi

supporting information, p. 127 - 134 (2019/12/26)

Tandem Meinwald rearrangement and nucleophilic substitution of oxiranenitriles was realized. Arylacetic acid derivatives were readily synthesized from 3-aryloxirane-2-carbonitriles with amines, alcohols, or water in the presence of boron trifluoride under microwave irradiation, and the designed synthetic strategy includes introducing a cyano leaving group into arylepoxides and capturing the in situ generated toxic cyanide with boron trifluoride, making the reaction efficient, safe, and environmentally benign. The reaction occurs through an acid-promoted Meinwald rearrangement, producing arylacetyl cyanides, followed by an addition-elimination process with nitrogen or oxygen-containing nucleophilic amines, alcohols or water. The current method provides a new application of the tandem Meinwald rearrangement.

Metal-free and regiospecific synthesis of 3-arylindoles

Xie, Wenlai,Xu, Chuangchuang,Xu, Jiaxi

, p. 2661 - 2671 (2020/04/17)

A convenient, metal-free, and organic acid-base promoted synthetic method to prepare 3-arylindoles from 3-aryloxirane-2-carbonitriles and arylhydrazine hydrochlorides has been developed. In the reaction, the organic acid catalyzes a tandem nucleophilic ri

ALPHA-HYDROXY-BETA-AZIDO-TETRAZOLES

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Paragraph 0249; 0250, (2017/09/25)

Alpha-hydroxy-beta-azido tetrazole compounds of formula (I): a process for manufacturing alpha-hydroxy-beta-azido tetrazoles of formula (I), and their use for synthesizing new compounds, e.g. in “click” chemistry.

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