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1338338-67-2

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1338338-67-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1338338-67-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,3,3 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1338338-67:
(9*1)+(8*3)+(7*3)+(6*8)+(5*3)+(4*3)+(3*8)+(2*6)+(1*7)=172
172 % 10 = 2
So 1338338-67-2 is a valid CAS Registry Number.

1338338-67-2Relevant articles and documents

Highly chemoselective reduction of amides (primary, secondary, tertiary) to alcohols using SmI2/amine/H2O under mild conditions

Szostak, Michal,Spain, Malcolm,Eberhart, Andrew J.,Procter, David J.

supporting information, p. 2268 - 2271 (2014/03/21)

Highly chemoselective direct reduction of primary, secondary, and tertiary amides to alcohols using SmI2/amine/H2O is reported. The reaction proceeds with C-N bond cleavage in the carbinolamine intermediate, shows excellent functional group tolerance, and delivers the alcohol products in very high yields. The expected C-O cleavage products are not formed under the reaction conditions. The observed reactivity is opposite to the electrophilicity of polar carbonyl groups resulting from the nX → πC=O (X = O, N) conjugation. Mechanistic studies suggest that coordination of Sm to the carbonyl and then to Lewis basic nitrogen in the tetrahedral intermediate facilitate electron transfer and control the selectivity of the C-N/C-O cleavage. Notably, the method provides direct access to acyl-type radicals from unactivated amides under mild electron transfer conditions.

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