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(4S,5S)-2,4,5-Triisopropyl-[1,3]dioxolane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

22520-20-3

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22520-20-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22520-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,5,2 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 22520-20:
(7*2)+(6*2)+(5*5)+(4*2)+(3*0)+(2*2)+(1*0)=63
63 % 10 = 3
So 22520-20-3 is a valid CAS Registry Number.

22520-20-3Upstream product

22520-20-3Downstream Products

22520-20-3Relevant academic research and scientific papers

Pinacol Coupling of Aliphatic Aldehydes Promoted by Niobium (III) Reagent

Szymoniak, Jan,Besancon, Jack,Moise, Claude

, p. 2841 - 2848 (1994)

NbCl3 (DME) was found to be a useful reagent for the intermolecular pinacol coupling of aliphatic aldehydes.The high anti diastereoselectivity of this reaction (dl / meso >/= 9 / 1) did not depend on the variation in the aldehyde alkyl chain.With respect to intramolecular pinacolization, the loss of the stereoselectivity observed is consistent with the mechanism involving an insertion of the oxo-group into the metal-carbon bond of the intermediate niobiooxirane. - Key Words: Nb(III) reagent; Pinacol coupling; Acetalization; Stereoselectivity

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