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51813-43-5

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51813-43-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51813-43-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,8,1 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 51813-43:
(7*5)+(6*1)+(5*8)+(4*1)+(3*3)+(2*4)+(1*3)=105
105 % 10 = 5
So 51813-43-5 is a valid CAS Registry Number.

51813-43-5Downstream Products

51813-43-5Relevant articles and documents

Enantioselective Synthesis of 2,2,3-Trisubstituted Indolines via Bimetallic Relay Catalysis of α-Diazoketones with Enones

Yang, Jian,Ke, Chaoqi,Zhang, Dong,Liu, Xiaohua,Feng, Xiaoming

supporting information, p. 4536 - 4539 (2018/08/07)

An efficient asymmetric intramolecular trapping of ammonium ylides of α-diazoketones with enones to synthesize indoline derivatives was realized. A Rh(II)/chiral N,N′-dioxide-Sc(III) complex bimetallic relay catalytic system was established. A series of optically active 2,2,3-trisubstituted indolines were obtained in high yields (up to 99%), good enantioselectivities (up to 99% ee), and excellent diastereoselectivities (up to >19:1 dr) under mild reaction conditions.

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