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132273-96-2

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132273-96-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 132273-96-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,2,2,7 and 3 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 132273-96:
(8*1)+(7*3)+(6*2)+(5*2)+(4*7)+(3*3)+(2*9)+(1*6)=112
112 % 10 = 2
So 132273-96-2 is a valid CAS Registry Number.

132273-96-2Relevant articles and documents

Diastereoselective addition of organolithiums to 1,3-oxazolidines complexed with aluminum tris(2,6-diphenylphenoxide) (ATPH)

Yamauchi, Takayasu,Sazanami, Hiroyuki,Sasaki, Yuuichi,Higashiyama, Kimio

, p. 1731 - 1736 (2007/10/03)

1,3-Oxazolidines were easily obtained by condensation of N-substituted (R)-phenylglycinol with aldehydes. Addition of organolithium reagents to 1,3-oxazolidines by complexation with the bulky Lewis acid aluminum tris(2,6-diphenylphenoxide) (ATPH) readily produced the corresponding chiral amines with good yield and high diastereoselectivity. The configuration of the new stereogenic center was shown to be opposite to that of adducts obtained for the same 1,3-oxazolidines using Grignard reagents. The best diastereoselectivity was achieved using N-isopropyl-1,3-oxazolidines. The mechanism of addition was deduced by determining the stereochemistry of the iminium-aluminum complex by NOE experiments.

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