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51608-62-9

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51608-62-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51608-62-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,6,0 and 8 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 51608-62:
(7*5)+(6*1)+(5*6)+(4*0)+(3*8)+(2*6)+(1*2)=109
109 % 10 = 9
So 51608-62-9 is a valid CAS Registry Number.

51608-62-9Relevant articles and documents

The highly enantioselective addition of indoles to N-acyl imines with use of a chiral phosphoric acid catalyst

Rowland, Gerald B.,Rowland, Emily B.,Liang, Yuxue,Perman, Jason A.,Antilla, Jon C.

, p. 2609 - 2611 (2008/02/09)

Equation Presented The highly enantioselective organocatalytic addition of N-benzyl indoles to N-acyl imines is reported. A total of 15 examples with product yield ranging from 89% to 99% and enantioselectivities from 90% to 97% are presented. A chiral ph

High substrate/catalyst organocatalysis by a chiral Bronsted acid for an enantioselective aza-ene-type reaction

Terada, Masahiro,Machioka, Kyoko,Sorimachi, Keiichi

, p. 2254 - 2257 (2007/10/03)

(Chemical Equation Presented) Lowering the load: A very small amount of a binaphthol-derived monophosphoric acid organocatalyst accelerates an azaene-type reaction of N-benzoylimines with enecarbamates to provide β-aminoimines with high enantiomeric purit

N-propargylamides via the asymmetric Michael addition of B-alkynyl-10-TMS-9-borabicyclo[3.3.2]decanes to N-acylimines

Gonzalez, Ana Z.,Canales, Eda,Soderquist, John A.

, p. 3331 - 3334 (2007/10/03)

The asymmetric synthesis of N-propargylamides through Michael addition of the alkynylborane 1 to N-acylimines is reported. The N-acetylimines provide the best substrates for the process exhibiting high selectivity (56-95% ee) with predictable stereochemis

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