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1064663-23-5

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1064663-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1064663-23-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,6,4,6,6 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1064663-23:
(9*1)+(8*0)+(7*6)+(6*4)+(5*6)+(4*6)+(3*3)+(2*2)+(1*3)=145
145 % 10 = 5
So 1064663-23-5 is a valid CAS Registry Number.

1064663-23-5Downstream Products

1064663-23-5Relevant articles and documents

Palladium-catalyzed formation of highly substituted naphthalenes from arene and alkyne hydrocarbons

Wu, Yao-Ting,Huang, Ke-Hsin,Shin, Chien-Chueh,Wu, Tsun-Cheng

experimental part, p. 6697 - 6703 (2009/07/01)

Several highly substituted naphthalenes 3 have been synthesized in a one-pot reaction by treatment of arenes 1 with alkynes 2 in the presence of palladium acetate and silver acetate. In this Pd-catalyzed protocol, an arene provides a benzo source for the construction of a naphthalene core through twofold aryl C - H bond activation. Reaction of triphenylphosphine with diphenylethyne (2 a) under the catalysis of PdIV complexes produced 1,2,3,4-tetraphenylnaphthalene (3ba) in 62% yield. Here, triphenylphosphine undergoes one aryl C - P bond cleavage and one aryl C - H bond activation to serve as a benzo moiety. Crystal structures of cycloadducts 3ea, 3ga, and 3ac have been analyzed. The twisted naphthalenes arise not only from the overcrowded substituents but also from the contribution of the CH3-π interaction.

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