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104149-83-9

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104149-83-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 104149-83-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,1,4 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 104149-83:
(8*1)+(7*0)+(6*4)+(5*1)+(4*4)+(3*9)+(2*8)+(1*3)=99
99 % 10 = 9
So 104149-83-9 is a valid CAS Registry Number.

104149-83-9Downstream Products

104149-83-9Relevant articles and documents

PREPARATION OF FURANS FROM ALKYNOLS UTILIZING PALLADIUM CATALYZED INTRAMOLECULAR ADDITION OF ALCOHOL TO ACETYLENE AS A KEY REACTION

Wakabayashi, Yukio,Fukuda, Yukitoshi,Shiragami, Hiroshi,Utimoto, Kiitiro,Nozaki, Hitosi

, p. 3655 - 3661 (1985)

A procedure is described for the synthesis of furans from 3-alkyn-1,2-diols or 2-methoxy-3-alkyn-1-ols by palladium catalyzed intramolecular addition of alcoholic moiety to acetylene linkage followed by elimination of water or methanol.The intermediary 3-furylpalladiums can be trapped with allyl halides affording 3-allylfurans in good yields.

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