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121740-77-0

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121740-77-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121740-77-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,4 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121740-77:
(8*1)+(7*2)+(6*1)+(5*7)+(4*4)+(3*0)+(2*7)+(1*7)=100
100 % 10 = 0
So 121740-77-0 is a valid CAS Registry Number.

121740-77-0Downstream Products

121740-77-0Relevant articles and documents

Dual platinum and pyrrolidine catalysis in the direct alkylation of allylic alcohols: Selective synthesis of monoallylation products

Shibuya, Ryozo,Lin, Lu,Nakahara, Yasuhito,Mashima, Kazushi,Ohshima, Takashi

supporting information, p. 4377 - 4381 (2014/05/06)

A dual platinum- and pyrrolidine-catalyzed direct allylic alkylation of allylic alcohols with various active methylene compounds to produce products with high monoallylation selectivity was developed. The use of pyrrolidine and acetic acid was essential, not only for preventing undesirable side reactions, but also for obtaining high monoallylation selectivity. Two cats are better than one: The combined use of platinum and pyrrolidine catalysts enabled the direct alkylation of allylic alcohols with reactive methylene compounds. Pyrrolidine was essential for obtaining high selectivity of the monoallylation products, which were produced without the use of excess nucleophiles. cod=1,5- cyclooctadiene, EWG=electron-withdrawing group.

PALLADIUM CATALYZED C-ALLYLATION OF HIGHLY ACIDIC CARBO AND HETEROCYCLIC β-DICARBONYL COMPOUNDS

Prat, M.,Moreno-Manas, M.,Ribas, J.

, p. 7205 - 7212 (2007/10/02)

Highly acidic carbo and heterocyclic β-dicarbonyl compounds such as barbituric acid, 3,5-dimethyl-2H-1,2,6-thiadiazine 1,1-dioxide, cyclohexane-1,3-dione, tetronic acids, Meldrum acid and 1,2-diphenylpyrazolidine-3,5-dione are efficiently C-allylated with primary and secondary allylating agents under palladium catalysis.

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