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663107

Sigma-Aldrich

(2S,5S)-(−)-2-tert-Butyl-3-methyl-5-benzyl-4-imidazolidinone

97%

Synonyme(s) :

(2S,5S)-2-tert-Butyl-3-methyl-5-phenylmethyl-4-imidazolidinone, (2S,5S)-5-Benzyl-2-tert-butyl-3-methyl-4-imidazolidinone

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About This Item

Formule empirique (notation de Hill):
C15H22N2O
Numéro CAS:
346440-54-8
Poids moléculaire :
246.35
Numéro MDL:
MFCD03426982
Code UNSPSC :
12352005
ID de substance PubChem :
24884185
Nomenclature NACRES :
NA.22

Pureté

97%

Forme

solid

Pf

93-100 °C (lit.)

Chaîne SMILES 

CN1[C@H](N[C@@H](Cc2ccccc2)C1=O)C(C)(C)C

InChI

1S/C15H22N2O/c1-15(2,3)14-16-12(13(18)17(14)4)10-11-8-6-5-7-9-11/h5-9,12,14,16H,10H2,1-4H3/t12-,14-/m0/s1

Clé InChI

SKHPYKHVYFTIOI-JSGCOSHPSA-N

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Description générale

(2S,5S)-(-)-2-tert-Butyl-3-methyl-5-benzyl-4-imidazolidinone is a chiral imidazolidinone organocatalyst, developed by MacMillan and co-workers.

Application

(2S,5S)-(-)-2-tert-Butyl-3-methyl-5-benzyl-4-imidazolidinone is a second-generation MacMillan catalyst, which can be used as a chiral organocatalyst in:
  • The chiral transformation reaction, including Friedel-Crafts and Mukaiyama-Michael reactions.
  • The preparation of substituted spiroundecenetriones via asymmetric domino Knoevenagel/Diels-Alder reactions.
  • The asymmetric synthesis of β-hydroxy aldehydes and their dimethylacetals via aldehyde-aldehyde aldol condensation reaction.
  • The enantioselective α-fluorination of aldehydes using N-fluorobenzenesulfonamide as a fluorinating agent.
  • The stereoselective preparation of (oxomethyl)oxabicyclo[3.2.1]octenones and tricyclic pyrroles via [4+3] cycloaddition of (trialkylsiloxy)pentadienals to furans.

Metal-free OrganoCatalyst technology for asymmetric catalysis. Catalyzes asymmetric indole alkylations, Friedel-Crafts alkylations, and a broad range of conjugate addition reactions in high enantiomeric excess.

Caractéristiques et avantages

Advantages of MacMillan imidazolidinone organocatalysts:
  • Superior enantiocontrol in numerous transformations
  • High activities at low catalyst loadings
  • Extraordinary functional group tolerance

Informations légales

U.S. Pat. 6,369,243 and related patents apply. For research purposes only.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

The Importance of Iminium Geometry Control in Enamine Catalysis: Identification of a New Catalyst Architecture for Aldehyde-Aldehyde Couplings
Mangion IK, et al.
Angewandte Chemie (International Edition in English), 116(48), 6890-6892 (2004)
Teresa D Beeson et al.
Science (New York, N.Y.), 316(5824), 582-585 (2007-03-31)
The asymmetric alpha-addition of relatively nonpolar hydrocarbon substrates, such as allyl and aryl groups, to aldehydes and ketones remains a largely unsolved problem in organic synthesis, despite the wide potential utility of direct routes to such products. We reasoned that
Direct asymmetric α-fluorination of aldehydes
Steiner DD, et al.
Angewandte Chemie (International Edition in English), 117(24), 3772-3776 (2005)
Evaluation of protonation sites in two MacMillan catalysts in solution by gas phase predissociation spectroscopy and electronic structure calculations
Tavares LC, et al.
Organic Chemistry, 134-145 (2020)
Nick A Paras et al.
Journal of the American Chemical Society, 124(27), 7894-7895 (2002-07-04)
The first enantioselective organocatalytic alkylation of electron-rich benzene rings with alpha,beta-unsaturated aldehydes has been accomplished. The use of iminium catalysis has provided a new strategy for the enantioselective construction of benzylic stereogenicity, an important chiral synthon for natural product and
Afficher tous les articles scientifiques apparentés

Articles

Macmillan Imidazolidinone Organocatalysts

Discover Professor David MacMillan's groundbreaking metal-free asymmetric catalysis using imidazolidinone-based organocatalysts for versatile transformations.

Macmillan Imidazolidinone Organocatalysts

Discover Professor David MacMillan's groundbreaking metal-free asymmetric catalysis using imidazolidinone-based organocatalysts for versatile transformations.

Macmillan Imidazolidinone Organocatalysts

Discover Professor David MacMillan's groundbreaking metal-free asymmetric catalysis using imidazolidinone-based organocatalysts for versatile transformations.

Macmillan Imidazolidinone Organocatalysts

Discover Professor David MacMillan's groundbreaking metal-free asymmetric catalysis using imidazolidinone-based organocatalysts for versatile transformations.

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