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3′-(3-nitrophenyl)dispiro[indene-2,1′-cyclopropane-2′,2′′-indene]-1,1′′,3,3′′-tetraone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

18691-32-2

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18691-32-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18691-32-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,9 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 18691-32:
(7*1)+(6*8)+(5*6)+(4*9)+(3*1)+(2*3)+(1*2)=132
132 % 10 = 2
So 18691-32-2 is a valid CAS Registry Number.

18691-32-2Downstream Products

18691-32-2Relevant academic research and scientific papers

One-pot, fast cyclopropanation reaction of indandione with various aldehydes in the presence of cyanogen bromide and trimethylamine

Aalinejad, Michael,Noroozi Pesyan, Nader

, p. 1523 - 1530 (2019/05/10)

A new, fast, and easy one-pot cyclopropanation reaction of aromatic and aliphatic aldehydes with 1H-indene-1,3(2H)-dione and cyanogen bromide (BrCN) was developed for synthesizing 3′-(aryl[alkyl])-dispiro[indan-2,1′-cyclopropane-2′,2′′-indan]-1,1′′,3,3′′-

Synthesis of Activated Cyclopropanes by MHIRC Strategy: A Facile and Efficient Approach to Spirocyclopropanes Using N-Halosulfon-amides

Ghorbani-Vaghei, Ramin,Maghbooli, Yaser

, p. 3803 - 3811 (2016/10/30)

In this study, a one-pot, three-component reaction of two molecules of indane-1,3-dione with aromatic aldehydes for the synthesis of spirocyclopropylindanediones using poly(N-bromo-N-ethylbenzene-1,3-disulfonamide) (PBBS), N,N,N',N'-tetrabromobenzene-1,3-

Selective formation of spiro dihydrofurans and cyclopropanes through unexpected reaction of aldehydes with 1,3-dicarbonyl compounds

Wang, Guan-Wu,Gao, Jie

supporting information; experimental part, p. 2385 - 2388 (2009/10/10)

An efficient methodology for the oxidative addition reaction of various aldehydes with 5,5-dimethylcyclohexane-1,3-dione and 1,3-indandione to selectively afford spiro dihydrofuran and cyclopropane derivatives, promoted by molecular iodine and dimethylami

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