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951887-33-5

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951887-33-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 951887-33-5 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 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 951887-33:
(8*9)+(7*5)+(6*1)+(5*8)+(4*8)+(3*7)+(2*3)+(1*3)=215
215 % 10 = 5
So 951887-33-5 is a valid CAS Registry Number.

951887-33-5Relevant 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.

Palladium-Catalyzed Cascade Reductive and Carbonylative Cyclization of Ortho-Iodo-Tethered Methylenecyclopropanes (MCPs) Using N-Formylsaccharin as CO Source

Fan, Xing,Shi, Min,Wei, Yin

, p. 5677 - 5683 (2019/11/16)

A palladium-catalyzed reductive and carbonylative cyclization of ortho-iodo-tethered methylenecyclopropanes (MCPs) using N-formylsaccharin as CO source has been developed, affording the desired indanone derivatives in moderate to good yields with high regio- and stereoselectivity and good functional group compatibility.

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