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508225-73-8

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508225-73-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 508225-73-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,8,2,2 and 5 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 508225-73:
(8*5)+(7*0)+(6*8)+(5*2)+(4*2)+(3*5)+(2*7)+(1*3)=138
138 % 10 = 8
So 508225-73-8 is a valid CAS Registry Number.

508225-73-8Relevant articles and documents

Stereoselective Synthesis of Tetrahydroisoquinolines from Chiral 4-Azaocta-1,7-diynes and 4-Azaocta-1,7-enynes

Sirvent, Ana,García-Mu?oz, M. Jesús,Yus, Miguel,Foubelo, Francisco

, p. 113 - 126 (2019/12/30)

The N-propargylation of enantioenriched homopropargylic amine derivatives 3 proceeds in high yields under basic conditions. The resulting 4-azaocta-1,7-dynes 5 were transformed into 1,2,3,4-tetrahydrosioquinolines 7 bearing substituents at 3-, 6- and 7-positions, upon reaction with symmetrical alkynes, through a [2+2+2] cyclotrimerization promoted by Wilkinson catalyst. Ruthenium-catalyzed ring closing metathesis of azaocta-1,7-enynes 9a and 15a gave 1,3-dienes 10a and 16a, respectively, in high yields. Tetrahydroisoquinolines 12a and 18a, with a substitution pattern in the aromatic ring different to that of compounds 7, were prepared by a [4+2] cycloaddition of dimethyl acetylenedicarboxylate with dienes 10a and 16a, respectively.

First sonochemical, simple and solvent-free synthesis of chiral tert-butanesulfinimines using silica supported p-toluenesulfonic acid

Appa, Rama Moorthy,Lakshmidevi, Jangam,Siva Prasad, Sana,Muralidhar, Baitinti,Ramesh Naidu, Bandameeda,Narasimhulu, Manchala,Venkateswarlu, Katta

supporting information, p. 56 - 64 (2019/01/18)

A solvent-free, versatile procedure has been developed for the effective synthesis of tert-butanesulfinylimines of a variety of aldehydes using chiral tert-butanesulfinamides under green, sonochemical conditions. This method utilizes silica supported p-to

Multifunctional 1,3-diphenylguanidine for the carboxylative cyclization of homopropargyl amines with CO2 under ambient temperature and pressure

Gao, Xiao-Tong,Xie, Shi-Liang,Zhou, Feng,Wu, Hai-Hong,Zhou, Jian

supporting information, p. 14303 - 14306 (2019/12/03)

Herein, we report that 1,3-diphenylguanidine (DPG) could be utilized for the carboxylative cyclization of homopropargyl amines with CO2 under ambient temperature and pressure, in combination with AgSbF6, which enabled the synthesis o

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