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1254593-89-9

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1254593-89-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1254593-89-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,4,5,9 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1254593-89:
(9*1)+(8*2)+(7*5)+(6*4)+(5*5)+(4*9)+(3*3)+(2*8)+(1*9)=179
179 % 10 = 9
So 1254593-89-9 is a valid CAS Registry Number.

1254593-89-9Downstream Products

1254593-89-9Relevant academic research and scientific papers

Catalytic asymmetric synthesis of chiral allylic esters

Cannon, Jeffrey S.,Kirsch, Stefan F.,Overman, Larry E.

, p. 15185 - 15191 (2010)

A broadly useful catalytic enantioselective synthesis of branched allylic esters from prochiral (Z)-2-alkene-1-ols has been developed. The starting allylic alcohol is converted to its trichloroacetimidate intermediate by reaction with trichloroacetonitrile, either in situ or in a separate step, and this intermediate undergoes clean enantioselective SN2′ substitution with a variety of carboxylic acids in the presence of the palladium(II) catalyst (Rp,S)-di-μ-acetatobis[(η5- 2-(2′-(4′-methylethyl)oxazolinyl)cyclopentadienyl-1-C,3′-N) (η4-tetraphenylcyclobutadiene)cobalt]dipalladium, (R p,S)-[COP-OAc]2, or its enantiomer. The scope and limitations of this useful catalytic asymmetric allylic esterification are defined.

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