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2-Pentenoic acid, 5-[[(1,1-dimethylethoxy)carbonyl](phenylmethyl)amino]-2-methyl-, ethyl ester, (2E)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

198781-68-9

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198781-68-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198781-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,7,8 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 198781-68:
(8*1)+(7*9)+(6*8)+(5*7)+(4*8)+(3*1)+(2*6)+(1*8)=209
209 % 10 = 9
So 198781-68-9 is a valid CAS Registry Number.

198781-68-9Relevant academic research and scientific papers

Synthesis of pyrrolidines by anionic cyclization onto allylic ethers, alkynes and carboxylic groups

Coldham, Iain,Lang-Anderson, Maria M.S.,Rathmell, Richard E.,Snowden, David J.

, p. 7621 - 7624 (1997)

α-Amino-methylstannanes with pendent allylic ether, alkyne or carboxylic groups, can be converted, on treatment with butyllithium, to 3-vinyl-, 3-methylene- or 3-keto-pyrrolidines by anionic cyclization.

Intramolecular carbolithiation reactions for the preparation of 3-alkenylpyrrolidines.

Coldham, Iain,Price, Kathy N,Rathmell, Richard E

, p. 2111 - 2119 (2007/10/03)

Tin-lithium exchange allows the formation of alpha-amino-organolithium species that undergo anionic cyclization onto allylic ethers to give 3-alkenylpyrrolidines. The methodology has been applied to the synthesis of an advanced intermediate related to the natural product (-)-alpha-kainic acid.

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