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1413809-77-4

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1413809-77-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1413809-77-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,1,3,8,0 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1413809-77:
(9*1)+(8*4)+(7*1)+(6*3)+(5*8)+(4*0)+(3*9)+(2*7)+(1*7)=154
154 % 10 = 4
So 1413809-77-4 is a valid CAS Registry Number.

1413809-77-4Downstream Products

1413809-77-4Relevant articles and documents

5-hydroxyindoles by intramolecular alkynol-furan diels-alder cycloaddition

LaPorte, Matthew,Hong, Ki Bum,Xu, Jie,Wipf, Peter

, p. 167 - 174 (2013/03/29)

A convergent approach provides a convenient access to synthetically and biologically useful 3,4-disubstituted 5-hydroxyindoles. The one-pot procedure uses microwave heating to initiate an intramolecular [4 + 2]-cycloaddition of an alkynol segment onto a furan followed by a fragmentation, aromatization, and N-Boc deprotection cascade. Yields range from 15 to 74%, with aromatic substituents providing better conversions. 4-Trimethylsilylated analogues undergo a 1,3-silatropic rearrangement to give the O-TMS ethers.

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