22668-99-1

Basic information

• Product Name: 9-(2,4,6-trimethylphenyl)anthracene
• Synonyms: 9-(2,4,6-trimethylphenyl)anthracene
• CAS NO: 22668-99-1
• Molecular Weight: 296.412
• Mol File: 22668-99-1.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: 9-(2,4,6-trimethylphenyl)anthracene(CAS DataBase Reference)
• NIST Chemistry Reference: 9-(2,4,6-trimethylphenyl)anthracene(22668-99-1)
• EPA Substance Registry System: 9-(2,4,6-trimethylphenyl)anthracene(22668-99-1)

Safety Data

• Hazardous Substances Data: 22668-99-1(Hazardous Substances Data)

Upstream product

• 1564-64-3 9-Bromoanthracene 
• 716-53-0 9-chloroanthracene 
• 2633-66-1 2-mesitylmagnesium bromide 
• 576-83-0 2,4,6-trimethylphenyl bromide 
• 75732-01-3 mesitylcopper(I) 
• 5980-97-2 mesitylboronic acid 
• 1334420-87-9 C₁₄H₂₁BO₃ 
• 90-44-8 anthracen-9(10H)-one 

Relevant articles and documents

Expanded Kekulenes

The synthesis of kekulene and its higher homologues is a challenging task in organic chemistry. The first successful synthesis and characterization of the parent kekulene were reported by Diederich and Staab in 1978. Herein, we report the facile preparati

Dimenthylphosphine P-Oxide as a Synthetic Platform for Bulky and Chiral Ligands with Dimenthylphosphino Donor Groups

Attaching di(1R)-menthylphosphino fragments (menthyl = Men = 1R,2S,5R-2-isopropyl-5-methylcyclohex-1-yl) to molecular scaffolds turns them into homochiral, bulky, electron-rich phosphine ligands with proven and potential applications in coordination chemistry and transition-metal catalysis. Dimenthylphosphine P-oxide (Men2POH; 1) is established as a platform chemical toward dimenthylphosphino-containing targets via transformation to the known ligand precursors dimenthylchlorophosphine (4) and dimenthylphosphine (6). Transformations of 1 to dimenthylphosphinyl chloride (5) and dimenthylphosphinic acid (8) are elaborated. A phospha-Michael type 1,4-addition of 1 to p-benzo-or 1,4-naphthoquinone gives the corresponding o-hydroxyaryl(dimenthyl)phosphine oxides. Deprotonation of 1 with n-BuLi provides a phosphinyl nucleophile, whose reactions with alkyl halides or 1,n-dihaloalkanes provide tertiary alkyl dimenthylphosphine oxides or 1,n-bis(dimenthylphosphino)alkane bis(P-oxides) 10a-c, respectively. As an example, oxide 10b was deoxygenated to the diphosphine Men2P(CH2)3PMen2 (11) and characterized via the square-planar complex [(Men2P(CH2)3PMen2)PdCl2] (12). A selection of P-aryl dimenthylphosphines, including PhP(Men)2 (19) and 2-ClC6H4P(Men)2 (22), as well as the menthyl analogues Men-JohnPhos (21) and Men-SPhos (24), of the respective Buchwald ligands have been prepared. The combination of the secondary phosphine oxide (SPO) 1 with PdCl2 produces halide-bridged [(Men2POH)2Pd2Cl2] (25), mononuclear [(Men2POH)2PdCl2] (26), or the halide-bridged pseudochelate complex [(Men2PO···H···OPMen2)2Pd2Cl2] (27), depending on the reaction stoichiometry and conditions, all of which have been crystallographically characterized. The new ligands 1, 19, 21, 22, and 24 and complexes 25 and 26 have been evaluated in model palladium-catalyzed C-C-and C-N-fragment coupling reactions and found to display specific reactivity profiles due to the presence of the menthyl groups. Ligand 22 in particular catalyzed an asymmetric biaryl-forming coupling to give 2-methoxy-1,1′-binaphthalene with an er of up to 93:7.

NOVEL CHIRAL DIHYDROBENZOOXAPHOSPHOLE LIGANDS AND SYNTHESIS THEREOF

This invention relates to novel phosphorous ligands useful for organic transformations. Methods of making and using the ligands in organic synthesis are described. The invention also relates to processes for preparing the novel ligands.