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1609064-15-4

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1609064-15-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1609064-15-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,9,0,6 and 4 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1609064-15:
(9*1)+(8*6)+(7*0)+(6*9)+(5*0)+(4*6)+(3*4)+(2*1)+(1*5)=154
154 % 10 = 4
So 1609064-15-4 is a valid CAS Registry Number.

1609064-15-4Downstream Products

1609064-15-4Relevant articles and documents

Highly Enantioselective Tandem Michael Addition of Tryptamine-Derived Oxindoles to Alkynones: Concise Synthesis of Strychnos Alkaloids

He, Weigang,Hu, Jiadong,Wang, Pengyan,Chen, Le,Ji, Kai,Yang, Siyu,Li, Yin,Xie, Zhilong,Xie, Weiqing

supporting information, p. 3806 - 3809 (2018/03/05)

A highly enantioselective tandem Michael addition of tryptamine-derived oxindoles to alkynones was developed by taking advantage of a chiral N,N′-dioxide Sc(OTf)3 catalyst. The reaction enables the facile preparation of enantioenriched spiro[pyrrolidine-3,3′-oxindole] compounds, which provides a novel strategy for the synthesis of monoterpenoid indole alkaloids. As a demonstration, the asymmetric synthesis of strychnos alkaloids [(?)-tubifoline, (?)-tubifolidine, (?)-dehydrotubifoline] was achieved in 10–11 steps.

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