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934637-09-9

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934637-09-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 934637-09-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,4,6,3 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 934637-09:
(8*9)+(7*3)+(6*4)+(5*6)+(4*3)+(3*7)+(2*0)+(1*9)=189
189 % 10 = 9
So 934637-09-9 is a valid CAS Registry Number.

934637-09-9Downstream Products

934637-09-9Relevant articles and documents

Unexpected Role of p-Toluenesulfonylmethyl Isocyanide as a Sulfonylating Agent in Reactions with α-Bromocarbonyl Compounds

Chen, Jiajia,Guo, Wei,Wang, Zhenrong,Hu, Lin,Chen, Fan,Xia, Yuanzhi

, p. 5504 - 5512 (2016)

The reactions of p-toluenesulfonylmethyl isocyanide (TosMIC) with α-bromocarbonyl compounds leading efficiently to α-sulfonated ketones, esters, and amides were reported, in which an explicit new role of TosMIC as the sulfonylating agent was uncovered for the first time. Mechanistic study by control experiments and DFT calculations suggested that the reaction is initiated by Cu(OTf)2-catalyzed hydration of TosMIC to form a formamide intermediate, which undergoes facile C-S bond cleavage under the mediation of a Cs2CO3 additive.

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