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717121-63-6

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717121-63-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 717121-63-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,1,7,1,2 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 717121-63:
(8*7)+(7*1)+(6*7)+(5*1)+(4*2)+(3*1)+(2*6)+(1*3)=136
136 % 10 = 6
So 717121-63-6 is a valid CAS Registry Number.

717121-63-6Downstream Products

717121-63-6Relevant articles and documents

Stereoselective and competitive [1,2]- and [2,3]-wittig rearrangements of allyl heteroarylalkyl ethers

Capriati, Vito,Florio, Saverio,Ingrosso, Giovanni,Granito, Catia,Troisi, Luigino

, p. 478 - 484 (2007/10/03)

Several allyl heteroarylalkyl ethers have been synthesized and then deprotonated with nBuLi in THF at -78°C to give lithium derivatives. The lithium-bearing terminus was either the α- or the α′-carbon atom, depending on the associated proton acidity. In the absence of an external electrophile, a sigmatropic rearrangement occurs, generating a new C-C bond. Heteroarylalkyl homoallylic alcohols and allyl heteroarylalkylic alcohols were obtained as products of stereoselective [2,3]- or [1,2]-Wittig rearrangements, respectively. Homoallylic alcohols were obtained in high yields and with fairly good enantiomeric enrichments when the reactions were carried out in toluene with (-)-sparteine as the external chiral ligand.

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