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51233-80-8

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51233-80-8 Usage

Chemical Properties

Colourless Oil

Uses

2,6-Dimethylphenylpropionate is used as an intermediate in the Saliniketal A, B formal synthesis desymmetrization.

Check Digit Verification of cas no

The CAS Registry Mumber 51233-80-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,2,3 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 51233-80:
(7*5)+(6*1)+(5*2)+(4*3)+(3*3)+(2*8)+(1*0)=88
88 % 10 = 8
So 51233-80-8 is a valid CAS Registry Number.

51233-80-8Relevant articles and documents

5-phenylpyrrolo-1,4-benzoxazine and 5-phenylpyrrolo-1,4-benzothiazine compounds, process and intermediates for their production and pharmaceutical compositions containing them

-

, (2008/06/13)

Pharmacologically active compounds of formula I STR1 which can be substituted in the phenyl rings and in which R1 denotes hydrogen or lower alkyl, R2 denotes hydrogen or lower alkyl, Y denotes oxygen or sulfur n represents an integer from 1 to 3 Z represents a bond, a CO group or a CH= group, Q denotes nitrogen or the CH group and R7, if Q denotes nitrogen, represents an optionally substituted pyridyl or phenyl radical or, if Q denotes the CH group, represents the N-methyl-N-(4-oxo-3H-pyrimidin-2-yl)amino group, and their acid addition salts and processes and intermediates for their preparation.

ACYCLIC STEREOSELECTION-13; ARYL ESTERS: REAGENTS FOR THREO-ALDOLIZATION

Heathcock, Clayton H.,Pirrung, Michael C.,Montgomery, Stephen H.,Lampe, John

, p. 4087 - 4095 (2007/10/02)

Preformed Li enolates of hindered aryl esters condense with aldehydes to give predominantly threo aldols.The method has been explored with esters 3 (DMP propionate), 4 (BHT propionate), 5 (DBHA propionate).DMP propionate reacts with benzaldehyde and α-unbranched aliphatic aldehydes to give threo:erythro ratios of about 6.5:1.However, with α-branched aliphatic aldehydes, ester 3 gives only threo-aldols.BHT propionate and DBHA propionate give only threo-aldols with all aldehydes studied.The DMP aldols may be converted into β-hydroxy acids by simple hydrolysis with KOH in aqueous methanol.BHT aldols cannot be hydrolyzed without retroaldolization.However, these aldols can be reduced to diastereomerically pure 1,3-diols.The DBHA aldols can converted into β-hydroxy acids by a method involving oxidation with ceric ammonium nitrate (CAN) in aqueous acetonitrile.Threo-selectivity is also seen in the condensations of DMP butyrate (15), DBHA butyrate (16), DMP pentenoate (17), and BHT pentenoate (18).The approach has been utilized in a stereoselective synthesis of racemic methyl corynomycolate.

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