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951889-75-1

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951889-75-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 951889-75-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,1,8,8 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 951889-75:
(8*9)+(7*5)+(6*1)+(5*8)+(4*8)+(3*9)+(2*7)+(1*5)=231
231 % 10 = 1
So 951889-75-1 is a valid CAS Registry Number.

951889-75-1Downstream Products

951889-75-1Relevant articles and documents

Novel transformation of aryl 2-iodophenyl ketones into 1,3-diarylisoquinolines with (TMS)2NH, styrenes, NIS, and tBuOK

Shibasaki, Kaho,Togo, Hideo

, (2020/12/25)

Treatment of aryl 2-iodophenyl ketones with TMS2NH in the presence of Sc(OTf)3 at warming conditions, followed by the reaction with styrenes and NIS gave N-(1-aryl-2-iodoethyl) aryl 2-iodophenyl ketimines. Further treatment of N-(1-aryl-2-iodoethyl) aryl 2-iodophenyl ketimines with tBuOK in the presence of 1,10-phenanthroline at 120 °C generated 1,3-diarylisoquinolines in moderate yields through SET from tBuOK onto the iodophenyl group to form aryl radicals, their 6-endo-trig cyclization onto the vinyl groups, and aromatization of the cyclized intermediates. The present method is a novel approach for the preparation of the isoquinoline core via two steps from aryl 2-iodophenyl ketones.

Cu(I)-Catalyzed Coupling and Cycloisomerization of Diazo Compounds with Terminal Yne-Alkylidenecyclopropanes: Synthesis of Functionalized Cyclopenta[ b]naphthalene Derivatives

Li, Peng-Hua,Yu, Liu-Zhu,Zhang, Xiao-Yu,Shi, Min

, p. 4516 - 4520 (2018/08/09)

A Cu(I)-catalyzed coupling and cycloisomerization of diazo compounds with terminal yne-alkylidenecyclopropanes (ACPs) has been presented. This reaction starts from the formation of an allenic intermediate in the Cu(I)-catalyzed cross-coupling reaction of a diazo compound with terminal alkyne in yne-tethered ACP and then undergoes a domino cycloisomerization of a 6π-electrocyclization and cyclopropane ring-opening rearrangement to give functionalized cyclopenta[b]naphthalene derivatives in moderate to excellent yields under mild conditions.

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