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210050-52-5

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210050-52-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 210050-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,0,0,5 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 210050-52:
(8*2)+(7*1)+(6*0)+(5*0)+(4*5)+(3*0)+(2*5)+(1*2)=55
55 % 10 = 5
So 210050-52-5 is a valid CAS Registry Number.

210050-52-5Relevant articles and documents

Chiral ketone catalyzed highly chemo- and enantioselective epoxidation of conjugated enynes

Wang, Zhi-Xian,Cao, Guo-An,Shi, Yian

, p. 7646 - 7650 (1999)

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Borylation of propargylic substrates by bimetallic catalysis. Synthesis of allenyl, propargylic, and butadienyl bpin derivatives

Zhao, Tony S. N.,Yang, Yuzhu,Lessing, Timo,Szabó, Kálmán J.

supporting information, p. 7563 - 7566 (2014/06/10)

Bimetallic Pd/Cu and Pd/Ag catalytic systems were used for borylation of propargylic alcohol derivatives. The substrate scope includes even terminal alkynes. The reactions proceed stererospecifically with formal S N2′ pathways to give allenyl boronates. Opening of propargyl epoxides leads to 1,2-diborylated butadienes probably via en allenylboronate intermediate.

Stereoselective synthesis of syn-configured α-allenols by rhodium-catalyzed reaction of alkynyl oxiranes with arylboronic acids

Miura, Tomoya,Shimada, Masahiko,De Mendoza, Paula,Deutsch, Carl,Krause, Norbert,Murakami, Masahiro

supporting information; experimental part, p. 6050 - 6054 (2009/12/26)

(Chemical Equation Presented) A rhodium-catalyzed reaction of alkynyl oxiranes with arylboronic acids affords syn-configured α-allenols with high diastereoselectivity. The reaction is initiated by addition of an arylrhodium(I) species onto the alkyne moie

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