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33686-67-8

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33686-67-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33686-67-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,6,8 and 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33686-67:
(7*3)+(6*3)+(5*6)+(4*8)+(3*6)+(2*6)+(1*7)=138
138 % 10 = 8
So 33686-67-8 is a valid CAS Registry Number.

33686-67-8Relevant articles and documents

Light-Induced Intramolecular Iodine-Atom Transfer Radical Addition of Alkyne: An Approach from Aryl Iodide to Alkenyl Iodide

Zhang, Yanbin,Xu, Jincheng,Guo, Hao

supporting information, p. 9133 - 9137 (2019/11/14)

A light-induced intramolecular iodine-atom transfer radical addition was reported toward iodine-substituted fluorene derivatives. A thioxanthone derivative was employed as a visible light sensitizer for this 5-exo-dig exclusive radical addition, and the newly formed vinyl iodide compounds were further proved to be effective partners for several cross-coupling reactions.

Diels-Alder Reaction: 1,4-Cycloaddition of N-Aryl-maleimides to Alkylidene- and Arylidene-fluorenones and Synthesis of Some New Fluoranthene Derivatives

Abdou, Sadek E.,Habashy, Adiba,Aziz, Gamil,Khalifa, Fathy

, p. 755 - 758 (2007/10/02)

The 1,4-cycloaddition of different N-arylmaleimides (IIa-f) to alkylidene- and arylidene-fluorenones (Ia-c) leads to the formation of the diadducts, 7-substituted-5-aryl-4,6-dioxo-4H-3,3a,5,6,6a,7,10b-octahydrofluoranthenopyrrole-endo(3,10b)-N-arylpyrrolidino-2',5'-diones (IIIa-r).The fully aromatized fluoranthene derivatives (Va-i) have also been synthesised either by boiling III in nitrobenzene or by reacting the bromo-derivatives (V) with appropriate II.Reduction of III using LAH gives VIII.The structures of the isolated products have been confirmed by elemental analyses, molecular weight determination and spectroscopic data.

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