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111767-82-9

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111767-82-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111767-82-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,7,6 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 111767-82:
(8*1)+(7*1)+(6*1)+(5*7)+(4*6)+(3*7)+(2*8)+(1*2)=119
119 % 10 = 9
So 111767-82-9 is a valid CAS Registry Number.

111767-82-9Upstream product

111767-82-9Downstream Products

111767-82-9Relevant articles and documents

Total Synthesis of (+)-Phyllanthocin. Introduction of Intramolecular Hydroformylation for Complex Molecule Functionalization

Burke, Steven D.,Cobb, Jeffery E.,Takeuchi, Kumiko

, p. 2138 - 2151 (2007/10/02)

A 17-step total synthesis of (+)-phyllanthocin (1a) is described.Application of Sharpless'asymetric epoxidation reaction provided access to the diastereo- and enantiomerically pure epoxy ketone 9, a partner in crossed aldol construction.A notably rapid and high-yielding spiroketal equilibration leading to the tetracyclic intermediate 2 was effected with HF in acetonitrile.A Rh(I)-catalyzed hydroformylation was used to introduce the C3 functionality.Studies of intramolecular delivery of the rhodium nucleus to the concave face of the C3-C4 olefin led to a substantial improvement in yield and regioselectivity over the intermolecular version.

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