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652146-28-6

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652146-28-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 652146-28-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,2,1,4 and 6 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 652146-28:
(8*6)+(7*5)+(6*2)+(5*1)+(4*4)+(3*6)+(2*2)+(1*8)=146
146 % 10 = 6
So 652146-28-6 is a valid CAS Registry Number.

652146-28-6Downstream Products

652146-28-6Relevant articles and documents

Efficient One-Step Aldol-Type Reaction of Ketones with Acetals and Ketals Mediated by Dibutylboron Triflate/ Diisopropylethyl Amine

Li, Lian-Sheng,Das, Sanjib,Sinha, Subhash C.

, p. 127 - 130 (2004)

(Equation presented) A highly efficient one-step Mukaiyama aldol-type reaction has been developed for the synthesis of β-alkoxy carbonyl compounds starting from ketones and acetals/ketals. The reaction is mediated by a combination of Bu2BOTf and i-Pr2NEt affording the products in high yields. Formation of the two possible diastereoisomers of the β-alkoxy ketones from the chiral acetals shows that the condensation takes place by an SN1 mechanism, involving prior opening of the acetal to an oxonium ion.

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