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56542-90-6

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56542-90-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56542-90-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,5,4 and 2 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 56542-90:
(7*5)+(6*6)+(5*5)+(4*4)+(3*2)+(2*9)+(1*0)=136
136 % 10 = 6
So 56542-90-6 is a valid CAS Registry Number.

56542-90-6Relevant articles and documents

Benzhydrylamine: An effective aminating agent for the synthesis of primary amines

Sun, Quan-Wei,Xing, Jun-De,Qin, Yu-Hong,Yin, Xu-Wen,Zhou, Yi

, p. 181 - 183 (2018/05/26)

Aldehydes, ketones, alkyl toluene-p-sulfonates and halides are converted into the corresponding primary amines with benzhydrylamine as a valuable ammonia synthon in moderate to excellent yields.

Diastereoselective and Enantiospecific Synthesis of 1,3-Diamines via 2-Azaallyl Anion Benzylic Ring-Opening of Aziridines

Li, Kangnan,Weber, Alexandria E.,Tseng, Luke,Malcolmson, Steven J.

supporting information, p. 4239 - 4242 (2017/08/23)

The 1,3-diamine motif appears in numerous complex molecules, yet there are few methods for the stereoselective construction of this moiety. Herein, we demonstrate a stereocontrolled synthesis of 1,3-diamines, which bear up to three contiguous stereogenic centers, through benzylic ring-opening of aziridines with 2-azaallyl anion nucleophiles. Reactions proceed efficiently (yield up to 95%), diastereoselectively (dr up to >20:1), site selectively, and enantiospecifically to deliver products with differentiated amino groups.

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