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185396-37-6

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185396-37-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 185396-37-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,3,9 and 6 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 185396-37:
(8*1)+(7*8)+(6*5)+(5*3)+(4*9)+(3*6)+(2*3)+(1*7)=176
176 % 10 = 6
So 185396-37-6 is a valid CAS Registry Number.

185396-37-6Relevant articles and documents

Construction of chiral α-amino quaternary stereogenic centers via phase-transfer catalyzed enantioselective α-alkylation of α-amidomalonates

Ha, Min Woo,Lee, Myungmo,Choi, Sujee,Kim, Seek,Hong, Suckchang,Park, Yohan,Kim, Mi-Hyun,Kim, Taek-Soo,Lee, Jihoon,Lee, Jae Kyun,Park, Hyeung-Geun

, p. 3270 - 3279 (2015)

An efficient enantioselective synthetic method for α-amido-α-alkylmalonates via phase-transfer catalytic α-alkylation was successfully developed. The α-alkylation of α-amidomalonates under phase-transfer catalytic conditions (50% KOH, toluene, 40 °C) in the presence of (S,S)-3,4,5-trifluorophenyl-NAS bromide afforded the corresponding α-amido-α-alkylmalonates in high chemical yields (up to 99%) and optical yields (up to 97% ee), which could be readily converted to versatile chiral intermediates bearing α-amino quaternary stereogenic centers. The synthetic potential of this methodology was demonstrated via the synthesis of chiral azlactone, oxazoline, and unnatural α-amino acid.

Highly enantioselective synthesis of (R)-α-alkylserines via phase-transfer catalytic alkylation of o-biphenyl-2-oxazoline-4-carboxylic acid tert-butyl ester using cinchona-derived catalysts

Lee, Yeon-Ju,Lee, Jihye,Kim, Mi-Jeong,Kim, Taek-Soo,Park, Hyeung-Geun,Jew, Sang-Sup

, p. 1557 - 1560 (2007/10/03)

(Chemical Equation Presented) A highly enantioselective synthetic method for (R)-α-alkylserines was developed by the phase-transfer catalytic alkylation of obiphenyl-2-oxazoline-4-carboxylic acid tert-butyl ester (4i) using cinchona-derived phase-transfer

α-Hydroxymethylphenylglycine and α-hydroxymethylphenylalanine: Synthesis, resolution, and absolute configuration

Olma

, p. 1442 - 1447 (2007/10/03)

Racemic α-hydroxymethylphenylglycine and α-hydroxymethylphenylalanine have been synthesized by selective hydroxymethylation of oxazolones derived from phenylglycine and phenylalanine, and resolved into enantiomers by fractional crystallization of their di

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