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3,5-Bis-(triphenyl-λ5-phosphanylidene)-pyran-2,4,6-trione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

74163-27-2

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74163-27-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74163-27-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,1,6 and 3 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 74163-27:
(7*7)+(6*4)+(5*1)+(4*6)+(3*3)+(2*2)+(1*7)=122
122 % 10 = 2
So 74163-27-2 is a valid CAS Registry Number.

74163-27-2Downstream Products

74163-27-2Relevant academic research and scientific papers

UMSETZUNG VON KETENYLIDEN-TRIPHENYLPHOSPHORAN UND SEINEM DIMEREN MIT SAEURECHLORIDEN

Juergen Bestmann, Hans,Geismann, Christian

, p. 257 - 260 (1980)

Ketenyliden-triphenylphosphoran (1) und sein Dimeres 6 reagieren mit aromatischen Saeurechloriden zu Pyronen 5.Aliphatische und Araliphatische Saeurechloride 10 liefern die analogen Verbindungen 11 und Bisphosphorane 12, waehrend 6 mit Diphenylessigsaeurechlorid (10c) das Allen 8 ergibt.Aus 1 und Chlorameisensaeuremethylester (14) erhaelt man das Pyryliumbetain 16.Die Salze 5 gehen mit Natriummethylat in die Bisphosphorane 17 ueber, die sich beim Erwaermen in die offenkettigen Strukturen 18 umlagern.

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