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Carbonic acid 1-cyclohexyl-4-(tetrahydro-pyran-2-yloxy)-but-2-ynyl ester methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

167900-69-8

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167900-69-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 167900-69-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,7,9,0 and 0 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 167900-69:
(8*1)+(7*6)+(6*7)+(5*9)+(4*0)+(3*0)+(2*6)+(1*9)=158
158 % 10 = 8
So 167900-69-8 is a valid CAS Registry Number.

167900-69-8Upstream product

167900-69-8Relevant academic research and scientific papers

Synthesis of α,β-Unsaturated Aldehydes through Palladium Catalyzed Regioselective Hydrogen Migration

Minami, Tatsuya,Hanaoka, Miyoji

, p. 9425 - 9428 (1994)

Treatment of cyclic carbonate of 3-alkene-1,2-diols or 4-methylcarbonate of 2-alkene-1,4-diols with a catalytic amount of Pd(PPh3)4 in aqueous THF or AcOH gave α,β-unsaturated aldehydes in good yields.The reaction can be interpreted by the regioselective 1,4-hyrogen migration of ?-allylpalladium intermediate.

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