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(2R,3R)-2,4-Bis-benzyloxy-3-methyl-butyraldehyde is a complex organic compound with the molecular formula C20H24O4. It is a chiral molecule, meaning it has a non-superimposable mirror image, and it is characterized by its specific (2R,3R) configuration, which refers to the arrangement of atoms at the chiral centers. (2R,3R)-2,4-Bis-benzyloxy-3-methyl-butyraldehyde features a butyraldehyde backbone with a 3-methyl group and two benzyloxy substituents at the 2nd and 4th positions. The benzyloxy groups are derived from benzyl alcohol, which is attached to the carbonyl group of the butyraldehyde, providing a protective group for the aldehyde functionality. (2R,3R)-2,4-Bis-benzyloxy-3-methyl-butyraldehyde is often used in organic synthesis, particularly in the preparation of complex molecules where the aldehyde group needs to be temporarily masked. Its chiral nature and protective groups make it a valuable intermediate in the synthesis of biologically active compounds and pharmaceuticals.

92979-24-3

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92979-24-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 92979-24-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,9,7 and 9 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 92979-24:
(7*9)+(6*2)+(5*9)+(4*7)+(3*9)+(2*2)+(1*4)=183
183 % 10 = 3
So 92979-24-3 is a valid CAS Registry Number.

92979-24-3Relevant academic research and scientific papers

Addition of Crotylchromium(II) and Dilithium Propionate to (R)-2,3-O-isopropylideneglyceraldehyde: Steric Course and Synthetic Application in a Formal Synthesis of (+)- and (-)-δ-Multistriatin

Mulzer, Johann,Lasalle, Peter de,Freissler, Axel

, p. 1152 - 1171 (2007/10/02)

The chromium(II) salt 4a of crotyl bromide adds to (R)-2,3-O-isopropylideneglyceraldehyde (1) with high enantiofacial and low diastereofacial (i.e.Cram) selectivity, whereas dilithium propionate (9) shows the opposite behaviour.The adducts 5, 7, and 10 can be used in a formal synthesis of both enantiomers of the insect pheromone δ-multistriatin (30).

STEREOSELECTIVE ADDITIONS TO CARBOXYLIC ACID DIANIONS AND β-LACTONE SUBSTITUTED ESTER ENOLATES. APPLICATION TO THE SYNTHESIS OF RACEMIC EPI-BLASTMYCINONE, δ-MULTISTRIATINE, PARACONIC ESTERS AND LIGNANTYPE DILACTONES

Mulzer, Johann,Lasalle, Peter de,Chucholowski, Alexander,Blaschek, Ursula,Bruentrup, Gisela,et al.

, p. 2211 - 2218 (2007/10/02)

New stereoselective syntheses are reported for racemic 4-epi-blastmycinone (6) and δ-multistriatine (13) utilizing the anti-configurated γ,δ-unsaturated β-hydroxy-carboxylic acids 2a/b.A diastereo- and enantioselective aldoltype addition of phenylacetic acid dianion to benzaldehyde has been achaived by employing optically active alkoxide amide bases.Finally, highly stereocontrolled additions to the novel β-lactone substituted ester enolates 22 are described.

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