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53834-50-7

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53834-50-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 53834-50-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,8,3 and 4 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 53834-50:
(7*5)+(6*3)+(5*8)+(4*3)+(3*4)+(2*5)+(1*0)=127
127 % 10 = 7
So 53834-50-7 is a valid CAS Registry Number.

53834-50-7Relevant articles and documents

Selectfluor-mediated mild oxidative halogenation and thiocyanation of 1-aryl-allenes with TMSX (X = Cl, Br, I, NCS) and NH4SCN

Laali, Kenneth K.,Nandi, Ganesh C.,Bunge, Scott D.

supporting information, p. 2401 - 2405 (2014/05/06)

Presence of TMSX (X = Cl, Br, I) unleashes the oxidative character of Selectfluor and provides a mild dihalogenation method for 1-arylallenes. Preference for 2,3-addition was observed with TMSCl in MeCN irrespective of the nature of the substituent on the aryl moiety, whereas 1,2-addition was preferred in [BMIM][BF4]. With TMSBr and TMSI only products corresponding to 2,3-addition were observed. Reactions carried out with TMSBr in IL solvents gave the corresponding monobromoalkenes as a major product along with the isomeric dibromo-alkenes. Reaction with NH4SCN provided convenient access to dithiocyanate derivatives. The same products were formed via TMS-NCS/Selectfluor. Formation of common products via TMSNCS and NH 4SCN points to the formation and interplay of SCN+/ NCS+ as incipient electrophiles.

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