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7-(tert-butyl-diphenyl-silanyloxy)-5-(3-methyl-but-2-enyloxy)-2-phenyl-chromen-4-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

447451-04-9

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447451-04-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 447451-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,7,4,5 and 1 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 447451-04:
(8*4)+(7*4)+(6*7)+(5*4)+(4*5)+(3*1)+(2*0)+(1*4)=149
149 % 10 = 9
So 447451-04-9 is a valid CAS Registry Number.

447451-04-9Downstream Products

447451-04-9Relevant academic research and scientific papers

Regioselective syntheses of 6-(1,1-dimethylallyl)- and 8-(3,3-dimethylallyl) chrysins

Daskiewicz, Jean-Baptiste,Bayet, Christine,Barron, Denis

, p. 3589 - 3595 (2007/10/03)

The first regioselective syntheses of 6-(1,1-dimethylallyl)- and 8-(3,3-dimethylallyl) chrysins have been designed. Claisen rearrangement of protected 5-O-(3,3-dimethylallyl) chrysin in N,N-diethylaniline at 200-217°C gave selective access to the 8-(3,3-dimethylallyl) isomer. Similar rearrangement in N,N-diethylbutylamine at 140-160°C, or in cycloheptane/Eu(fod)3 at 100°C, led to the formation of the 6-(1,1-dimethylallyl) isomer. Four different protecting groups for position 7 of chrysin have been compared, and found to follow the order of interest Bz>MOM>TBDPS>MEM.

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