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1353723-21-3

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1353723-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1353723-21-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,3,7,2 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1353723-21:
(9*1)+(8*3)+(7*5)+(6*3)+(5*7)+(4*2)+(3*3)+(2*2)+(1*1)=143
143 % 10 = 3
So 1353723-21-3 is a valid CAS Registry Number.

1353723-21-3Relevant articles and documents

Practical Synthesis of Halogenated N-Heterocycles via Electrochemical Anodic Oxidation of Unactivated Alkenes

He, Xinxu,He, Yanyang,Qin, Xiaowen,Wu, Xiao-Feng,Yin, Zhiping

supporting information, p. 5831 - 5834 (2021/11/17)

A general and efficient intramolecular halo-amination of unactivated alkenes for the synthesis of various halogenated N-heterocycles was developed via electrochemical anodic oxidation. This protocol proceeds in a simple undivided cell by employing LiI or LiBr as redox mediums and halogen sources. A wide range of halogenated N-heterocycles, including three-, five-, and six-membered N-heterocycles were constructed in moderate to good yields at room temperature. Notably, this electrochemical oxidative transformation avoids the utilization of external oxidants and strong bases, therefore represents an environmentally benign approach.

Enantioselective synthesis of pyrrolidine-, Piperidine-, and azepane-type N -heterocycles with α-alkenyl substitution: The CpRu-catalyzed dehydrative intramolecular N -allylation approach

Seki, Tomoaki,Tanaka, Shinji,Kitamura, Masato

supporting information; experimental part, p. 608 - 611 (2012/03/10)

A cationic CpRu complex of chiral picolinic acid derivatives [(R)- or (S)-Cl-Naph-PyCOOCH2CH=CH2] catalyzes asymmetric intramolecular dehydrative N-allylation of N-substituted ω-amino- and -aminocarbonyl allylic alcohols with a substrate/catalyst ratio of up to 2000 to give α-alkenyl pyrrolidine-, piperidine-, and azepane-type N-heterocycles with an enantiomer ratio of up to >99:1. The wide range of applicable N-substitutions, including Boc, Cbz, Ac, Bz, acryloyl, crotonoyl, formyl, and Ts, significantly facilitates further manipulation toward natural product synthesis.

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