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66737-07-3

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66737-07-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66737-07-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,7,3 and 7 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 66737-07:
(7*6)+(6*6)+(5*7)+(4*3)+(3*7)+(2*0)+(1*7)=153
153 % 10 = 3
So 66737-07-3 is a valid CAS Registry Number.

66737-07-3Relevant articles and documents

Bifunctional Borane Catalysis of a Hydride Transfer/Enantioselective [2+2] Cycloaddition Cascade

Zhang, Ming,Wang, Xiao-Chen

supporting information, p. 17185 - 17190 (2021/07/06)

Herein, we present a mild and efficient method for synthesizing enantioenriched tetrahydroquinoline-fused cyclobutenes through a cascade reaction between 1,2-dihydroquinolines and alkynones with catalysis by chiral spiro-bicyclic bisboranes. The bisborane

Recyclable heterogeneous palladium-catalyzed carbonylative Sonogashira coupling under CO gas-free conditions

Zhou, Zebiao,Li, Jianying,Xu, Zhaotao,Cai, Mingzhong

supporting information, p. 2015 - 2025 (2020/05/13)

A convenient, efficient and practical heterogeneous palladium-catalyzed carbonylative Sonogashira coupling of aryl iodides with terminal alkynes under CO gas-free conditions has been developed by using an MCM-41-supported bidentate phosphine palladium ace

Regio- and Stereoselective Hydrosulfonylation of Electron-Deficient Alkynes: Access to Both E- and Z-β-Sulfonyl-α,β-Unsaturated Carbonyl Compounds

Zhang, Wei,Johnson, Gabriel M.,Guan, Zhi,He, Yan-Hong

supporting information, p. 4562 - 4570 (2018/10/24)

A metal-free hydrosulfonylation of electron-deficient alkynes with sodium sulfinates or sulfinic acids to access both E- and Z-β-sulfonyl-α,β-unsaturated carbonyl compounds has been developed. We propose that this reaction via a hydroxylallene intermediate delivers the thermodynamically stable E isomer, or via a concerted termolecular AdE3 mechanism affords Z isomer. The stereoselectivity of addition (syn or anti) can be controlled by varying the sulfonyl sources and acidic buffer solutions. This protocol exhibits broad substrate scope for internal or terminal alkynes including various substituted ynones and alkynyl esters. This approach is mild, efficient, operationally simple and easy to be scaled-up. (Figure presented.).

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