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2-((E)-5,5-Bis-benzenesulfonyl-pent-2-enyl)-malonic acid dimethyl ester is a complex organic compound with the molecular formula C21H20O8S2. It is characterized by a malonic acid structure, which is a dicarboxylic acid, with two ester groups attached to the malonic acid backbone. The compound features a pent-2-enyl chain, which is a five-carbon chain with a double bond between the second and third carbon atoms, and is in the E configuration, indicating the trans arrangement of substituents around the double bond. Additionally, this chain is substituted with two benzenesulfonyl groups, which are derived from benzene with a sulfonyl group (-SO2-) attached. The dimethyl ester groups indicate that the carboxylic acid groups of the malonic acid have been esterified with methanol, resulting in two methyl ester groups. 2-((E)-5,5-Bis-benzenesulfonyl-pent-2-enyl)-malonic acid dimethyl ester is likely to be used in the synthesis of more complex organic molecules, particularly in pharmaceutical or chemical research, due to its unique structure and reactivity.

99260-82-9

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99260-82-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99260-82-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,2,6 and 0 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 99260-82:
(7*9)+(6*9)+(5*2)+(4*6)+(3*0)+(2*8)+(1*2)=169
169 % 10 = 9
So 99260-82-9 is a valid CAS Registry Number.

99260-82-9Downstream Products

99260-82-9Relevant academic research and scientific papers

Regioselective and Stereoselective Nucleophilic Addition to Electrophilic Vinylcyclopropanes

Burgess, Kevin

, p. 2046 - 2051 (2007/10/02)

Palladium(0) complexes catalyze ring opening of 1,1-diactivated 2-vinylcyclopropanes 2 with concomitant addition of a carbon nucleophile.The reaction is extremely regioselective and stereoselective in that the alkylation occurs syn to the cyclopropane bond being cleaved in bicyclic system (n = 3, 4).

CONJUGATE NUCLEOFHILIC RING OPENING OF ACTIVATED VINYLCYCLOPROPANES FACILITATED BY HOMOGENOUS PALLADIUM CATALYSIS

Burgess, Kevin

, p. 3049 - 3052 (2007/10/02)

1,1-Diactivated-2-vinylcyclopropanes (1) add carbon nucleophiles (2) regiospecifically in a conjugate sense in the presence of a catalytic amount of a zerovalent palladium complex.

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