추천 제품
일반 설명
(2S,5S)-(-)-2-tert-Butyl-3-methyl-5-benzyl-4-imidazolidinone is a chiral imidazolidinone organocatalyst, developed by MacMillan and co-workers.
애플리케이션
(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.
특징 및 장점
Advantages of MacMillan imidazolidinone organocatalysts:
- Superior enantiocontrol in numerous transformations
- High activities at low catalyst loadings
- Extraordinary functional group tolerance
법적 정보
U.S. Pat. 6,369,243 and related patents apply. For research purposes only.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
개인 보호 장비
Eyeshields, Gloves, type N95 (US)
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
The Importance of Iminium Geometry Control in Enamine Catalysis: Identification of a New Catalyst Architecture for Aldehyde-Aldehyde Couplings
Angewandte Chemie (International Edition in English), 116(48), 6890-6892 (2004)
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
Direct asymmetric α-fluorination of aldehydes
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
Organic Chemistry, 134-145 (2020)
문서
Discover Professor David MacMillan's groundbreaking metal-free asymmetric catalysis using imidazolidinone-based organocatalysts for versatile transformations.
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