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170938-18-8

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170938-18-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170938-18-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,9,3 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 170938-18:
(8*1)+(7*7)+(6*0)+(5*9)+(4*3)+(3*8)+(2*1)+(1*8)=148
148 % 10 = 8
So 170938-18-8 is a valid CAS Registry Number.

170938-18-8Relevant articles and documents

Cobalt-Catalyzed Allylic Alkylation Enabled by Organophotoredox Catalysis

Takizawa, Koji,Sekino, Tomoyuki,Sato, Shunta,Yoshino, Tatsuhiko,Kojima, Masahiro,Matsunaga, Shigeki

, p. 9199 - 9203 (2019/06/04)

Co-catalyzed allylic substitution reactions have received little attention, arguably because of the lack of any known advantage of Co catalysis over either Rh or Ir catalysis. Described here is a general and regioselective Co-catalyzed allylic alkylation using an in situ catalyst activation by organophotoredox catalysis. This noble-metal-free catalytic system exhibits unprecedentedly high reactivities and regioselectivities for the allylation with an allyl sulfone, for the first time, representing the unique synthetic utility of the Co-catalyzed method compared to the related Rh- and Ir-catalyzed reactions.

Regio- and enantioselective synthesis of chiral pyrimidine acyclic nucleosides via rhodium-catalyzed asymmetric allylation of pyrimidines

Liang, Lei,Xie, Ming-Sheng,Qin, Tao,Zhu, Man,Qu, Gui-Rong,Guo, Ha-Ming

, p. 5212 - 5215 (2017/11/06)

A direct route to branched N-allylpyrimidine analogues is herein reported via the highly regio- and enantioselective asymmetric allylation of pyrimidines with racemic allylic carbonates. With [Rh(COD)Cl]2/chiral diphosphine as the catalyst, a r

Regiocontrol and Stereoselectivity in Tungsten-Bipyridine Catalysed Allylic Alkylation

Lehmann, Juerg,Lloyd-Jones, Guy C.

, p. 8863 - 8874 (2007/10/03)

Tungsten-bipyridine complexes, generated in situ, catalyse the allylic alkylation of isocinnamyl methyl carbonate by dimethyl sodiomalonate with complete syn-stereoselectivity.When para substituted aryl-allyl methyl carbonates are employed, the regioselectivity correlates with Swain-Lupton parameters.Cross-over experiments demonstrate that the reactions do not proceed via the conventional 0> -> II allyl>+ -> 0 allyl-Nu> catalytic cycle.

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