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1750-23-8

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1750-23-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1750-23-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,5 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1750-23:
(6*1)+(5*7)+(4*5)+(3*0)+(2*2)+(1*3)=68
68 % 10 = 8
So 1750-23-8 is a valid CAS Registry Number.

1750-23-8Relevant articles and documents

Multistep Wavelength Switching of Near-Infrared Photoluminescence Driven by Chemical Reactions at Local Doped Sites of Single-Walled Carbon Nanotubes

Shiraki, Tomohiro,Shiga, Tamehito,Shiraishi, Tomonari,Onitsuka, Hisashi,Nakashima, Naotoshi,Fujigaya, Tsuyohiko

, p. 19162 - 19165 (2018)

Local chemical functionalization is used for defect doping of single-walled carbon nanotubes (SWNTs), to develop near-infrared photoluminescence (NIR PL) properties. We report the multistep wavelength shifting of the NIR PL of SWNTs through chemical react

Cooperative catalysis of molybdenum with organocatalysts for distribution of products between amines and imines

Wu, Di,Bu, Qingqing,Guo, Cheng,Dai, Bin,Liu, Ning

, (2021/02/02)

Multi-amino groups and nitrogen donors compound was discovered as an organocatalyst for N-alkylation of alcohols with amines in the presence of Mo(CO)6. The Mo(CO)6/organocatalyst binary system has shown to be a highly active catalyst for the N-alkylation reaction between alcohols and amines with excellent tolerance of variable starting materials bearing different functional groups. Of particular note, this method possessing a superiority selectivity in the synthesis of N-alkylated amines or imines, which can be controlled by the reaction temperature. The cooperative catalysis mechanism in combination of Mo(CO)6 with organocatalyst was elucidated by control experiments.

A Highly Selective Manganese-Catalyzed Synthesis of Imines under Phosphine-Free Conditions

Chai, Huining,Yu, Kun,Liu, Bo,Tan, Weiqiang,Zhang, Guangyao

, p. 217 - 226 (2020/01/31)

An efficient and highly selective phosphine-free NN-manganese(I) complex catalyst system was developed for the acceptorless dehydrogenative coupling of alcohols with amines to form imines. The coupling reactions underwent at 3 mol % catalyst loading, and a large range of alcohols and amines with diverse functional groups was applied, including challenging diol and diamine. The target imine products were obtained in good to excellent yields. The present work provides an alternative method to construct highly active nonprecious metal complex catalysts based on phosphine-free ligands.

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