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1618671-09-2

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1618671-09-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1618671-09-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,8,6,7 and 1 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1618671-09:
(9*1)+(8*6)+(7*1)+(6*8)+(5*6)+(4*7)+(3*1)+(2*0)+(1*9)=182
182 % 10 = 2
So 1618671-09-2 is a valid CAS Registry Number.

1618671-09-2Downstream Products

1618671-09-2Relevant articles and documents

Phosphine-catalyzed asymmetric [4+1] annulation of activated α,β-unsaturated ketones with Morita-Baylis-Hillman carbonates: Enantioselective synthesis of spirooxindoles containing two adjacent quaternary stereocenters

Hu, Fang-Le,Wei, Yin,Shi, Min

, p. 8912 - 8914 (2014)

The asymmetric [4+1] annulation of activated α,β-unsaturated ketones with MBH carbonates catalyzed by bifunctional thiourea-phosphine catalysts derived from an axially chiral binaphthyl scaffold has been developed, giving spirooxindoles with two adjacent

Remote Asymmetric Oxa-Diels-Alder Reaction of 5-Allylic Furfurals via Dearomatizative Tetraenamine Catalysis

He, Xiao-Long,Zhao, Hui-Ru,Duan, Chuan-Qi,Du, Wei,Chen, Ying-Chun

, p. 804 - 807 (2018)

A previously unreported activation mode is developed through the generation of dearomatizative tetraenamine species between 5-allylic furfurals and a bifunctional amine-thiourea catalyst. The very remote ζ,η-alkenes perform as effective HOMO-raised dienophiles in inverse-electron-demand oxa-Diels-Alder cycloadditions with isatin-derived oxadiene substrates, delivering multifunctional spirocyclic oxindoles incorporating a dihydropyran skeleton in moderate to high yields with good to excellent enantio- and diastereoselectivity.

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