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12-tosyl-12H-naphtho[1,2-b]carbazole is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

855749-25-6

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855749-25-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 855749-25-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,5,7,4 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 855749-25:
(8*8)+(7*5)+(6*5)+(5*7)+(4*4)+(3*9)+(2*2)+(1*5)=216
216 % 10 = 6
So 855749-25-6 is a valid CAS Registry Number.

855749-25-6Downstream Products

855749-25-6Relevant articles and documents

Dual Gold-Catalyzed Formal Tetradehydro-Diels–Alder Reactions for the Synthesis of Carbazoles and Indolines

Wang, Hong-Fa,Wang, Shi-Yue,Qin, Tian-Zhu,Zi, Weiwei

, p. 17911 - 17914 (2018/11/23)

This work reports a dual gold-catalyzed tetradehydro-Diels–Alder reaction for the synthesis of nitrogen-containing aromatic heterocycles. Under the catalytic system (IPrAuNTf2/DIPEA), indolines and carbazoles as well as other N-containing aromatic heterocycles were prepared in high yields with good functional group tolerance. Unlike the traditional thermal tetradehydro-Diels–Alder reactions, diluted reaction concentration and radical prohibitors are not required for this protocol. Experimental data support a mechanism involving gold vinylidene species, which undergoes a 6 π electrocyclization, followed with 1,2-hydrogen shift.

Scandium-catalyzed intramolecular friedel-crafts reactions of 2-[(2-Alkyl-1 H -indol-3-yl)methylene]malonates

Oh, Chang Ho,Park, Hyo Seung,Park, Nari,Kim, So Young,Piao, Lanhua

, p. 579 - 585 (2014/03/21)

We have synthesized a variety of 2-[(2-alkyl-1H-indol-3-yl)methylene] malonates and studied their scandium-catalyzed intramolecular Friedel-Crafts reactions leading to the corresponding polycyclic compounds such as indeno[1,2-b]indoles and benzo[1,2-b]carbazoles. Georg Thieme Verlag Stuttgart New York.

Synthesis of carbazoles by dehydro Diels-Alder reactions of ynamides

Martínez-Esperón, M. Fernanda,Rodríguez, David,Castedo, Luis,Saá, Carlos

, p. 3674 - 3686 (2008/09/19)

A new approach to carbazoles and benzannulated carbazoles by means of intramolecular dehydro Diels-Alder of ynamides is reported. N-(o-Ethynyl)aryl ynamides and N-(o-ethynyl) arylynamides were prepared in a few steps starting from o-iodoaniline. Thermal c

Coupling and cycloaddition of ynamides: Homo- and Negishi coupling of tosylynamides and intramolecular [4 + 2] cycloaddition of N-(o-ethynyl)phenyl ynamides and arylynamides

Martínez-Esperón, María Fernanda,Rodríguez, David,Castedo, Luis,Saá, Carlos

, p. 3843 - 3855 (2007/10/03)

N,N′-aryl- and N,N′-alkyl-buta-1,3-diyne-1,4-ditosylamides have been synthesized for the first time, in good to excellent yields, by copper-catalyzed dimerization of the corresponding N-aryl or N-alkyl tosylynamides. Negishi coupling of N-ethynylzinc tosy

Synthesis of carbazoles from ynamides by intramolecular dehydro Diels-Alder reactions

Martinez-Esperon, Maria Fernanda,Rodriguez, David,Castedo, Luis,Saa, Carlos

, p. 2213 - 2216 (2007/10/03)

(Chemical Equation Presented) A new approach to carbazoles and benzannulated carbazoles by means of intramolecular dehydro Diels-Alder reactions of ynamides is reported. By using this approach, carbazoles and benzo[b]-, tetrahydrobenzo[b]-, naphtho[1,2-b]

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