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3'-(4-chlorophenyl)spiro(fluorene-9,2'-oxirane) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

22691-08-3

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22691-08-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22691-08-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,9 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 22691-08:
(7*2)+(6*2)+(5*6)+(4*9)+(3*1)+(2*0)+(1*8)=103
103 % 10 = 3
So 22691-08-3 is a valid CAS Registry Number.

22691-08-3Downstream Products

22691-08-3Relevant academic research and scientific papers

Original synthesis of fluorenyl alcohol derivatives by reductive dehalogenation initiated by TDAE

Giuglio-Tonolo, Alain Gamal,Terme, Thierry,Vanelle, Patrice

, (2016/11/09)

We report here a novel and easy-to-handle reductive dehalogenation of 9-bromofluorene in the presence of arylaldehydes and dicarbonyl derivatives to give the corresponding fluorenyl alcohol derivatives and Darzens epoxides as by-products in tetrakis(dimethylamino)ethylene (TDAE) reaction conditions. The reaction is believed to proceed via two successive single electron transfers to generate the fluorenyl anion which was able to react with different electrophiles. A mechanistic study was conducted to understand the formation of the epoxide derivatives.

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