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470671-32-0

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470671-32-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 470671-32-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,0,6,7 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 470671-32:
(8*4)+(7*7)+(6*0)+(5*6)+(4*7)+(3*1)+(2*3)+(1*2)=150
150 % 10 = 0
So 470671-32-0 is a valid CAS Registry Number.

470671-32-0Downstream Products

470671-32-0Relevant articles and documents

Bulky trialkylsilyl acetylenes in the Cadiot-Chodkiewicz cross-coupling reaction

Marino, Joseph P.,Nguyen, Hanh Nho

, p. 6841 - 6844 (2002)

Bulky trialkylsilyl-protected alkynes such as triethylsilyl (TES), tert-butyldimethylsilyl (TBS), and tri-isopropylsilyl (TIPS) acetylenes underwent the Cadiot-Chodkiewicz cross-coupling reaction with different bromoalkynes to form a variety of synthetically useful unsymmetrical diynes in good yields. The diyne alcohol 10 was transformed regio- and stereoselectively into enynes by hydrotelluration, carbometalation, and reduction reactions.

Nickel-catalyzed oxidative coupling reactions of two different terminal alkynes using O2 as the oxidant at room temperature: Facile syntheses of unsymmetric 1,3-diynes

Yin, Weiyan,He, Chuan,Chen, Mao,Zhang, Heng,Lei, Aiwen

scheme or table, p. 709 - 712 (2009/08/12)

(Formula Presented) Two different terminal alkynes now can be coupled together in the presence of NiCl2-6H2O/Cul by using an excess of one of the terminal alkyne substrates. The new method employed 20 mol % TMEDA as the ligand and environmentally benign O2 or air as the oxidant. It is the first example using Ni-salt as catalyst by employing air or O2 as oxidant, which led to efficient heterocoupling of two different alkynes.

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