155135-23-2

Basic information

• Product Name: Phenol, 2-(1,1-dimethylethyl)-4-[[tris(1-methylethyl)silyl]oxy]-
• CAS NO: 155135-23-2
• Molecular Formula: C19H34O2Si
• Molecular Weight: 322.563
• Mol File: 155135-23-2.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: Phenol, 2-(1,1-dimethylethyl)-4-[[tris(1-methylethyl)silyl]oxy]-(CAS DataBase Reference)
• NIST Chemistry Reference: Phenol, 2-(1,1-dimethylethyl)-4-[[tris(1-methylethyl)silyl]oxy]-(155135-23-2)
• EPA Substance Registry System: Phenol, 2-(1,1-dimethylethyl)-4-[[tris(1-methylethyl)silyl]oxy]-(155135-23-2)

Safety Data

• Hazardous Substances Data: 155135-23-2(Hazardous Substances Data)

Upstream product

• 13154-24-0 triisopropylsilyl chloride 
• 1948-33-0 tert-butylhydroquinone 

Downstream Products

• 192803-37-5 3-tert-butyl-2,5-dihydroxybenzaldehyde 
• 884539-90-6 {(1R,2R)-2-[(-)-2-(3,5-di-tert-butyl-2-hydroxybenzylideneamino)cyclohexylimino]methyl}-6-tert-butylbenzene-1,4-diol 
• 336195-59-6 2,6-dichloro-heptanedioic acid bis-(3-tert-butyl-5-formyl-4-hydroxy-phenyl) ester 

Relevant articles and documents

Podand-Based Dimeric Chromium(III)-Salen Complex for Asymmetric Henry Reaction: Cooperative Catalysis Promoted by Complexation of Alkali Metal Ions

A new kind of podand-based dimeric salen ligand was synthesized, and its association with potassium cations was investigated by 1H NMR spectroscopy. The corresponding CrIII-salen dimer was assembled by a supramolecular host-guest sel

POLYMERIC SALEN COMPOUNDS AND METHODS THEREOF

The present disclosure provides a polymerizable compound of the formula (I) where the R1, R2, R’1, R’2, X1 to X8, Y1, Y2, M and L have any of values as defined in the

X-Ray Structural Studies of Highly Enantioselective Mn(salen) Epoxidation Catalysts

The relationship between catalyst structure and enantioselectivity in the asymmetric epoxidation of unfunctionalized olefins by a series of chiral Mn(salen) complexes (1-10) was examined.The X-ray structures of 5-coordinate complexes 5, 8, of 6-coordinate 9 (+ClO4-), and 10 (6,6' = -tBu; 4,4' = -Br) were determined.Catalysts 1-9 were derived from (R,R)-1,2-diaminocyclohexane and catalysts 10 from (S,S)-1,2-diphenylethylenediamine.Catalysts 1-9 differ in the stereoelectronic substitution of the ortho (6,6') and para (4,4') positions of the salicylidene moiety.A comparison between structures 5, 8, and 9 reveals that the ligand geometry around the metal cnter and the chiral diimine backbone remains remarkably constant in both five- and six-coordinate cyclohexanediamine-derived complexes; in contrast, the salicylidene regions of the complexes display a wide range of conformations.The asymmetric epoxidation of indene and 6-cyano-2,2-dimethylchromene with NaOCl catalyzed by complexes 1-10 was effected.Systematically increasing the steric bulk on the ortho and then the para position in the order 1 (6,6' = -H; 4,4' = -H), 2 (6,6' = -CH3; 4,4' = -CH3), 3 (6,6' = -tBu; 4,4' = -H), 4 (6,6' = -tBu; 4,4' = -CH3), 5 (6,6' = -tBu; 4,4' = -tBu), and 6 (6,6' = -tBu; 4,4' = -trityl), and electronically modifying the para substituents in 7 (6,6' = -tBu; 4,4' = -OMe) and 8 (6,6' = -tBu; 4,4' = -OTIPS) resulted in enhanced enantioselectivities of the desired epoxides.The conformational variations observed in the solid state are likely to reflect accessible solution conformations and may help explain the high levels of stereoinduction obtained with these catalysts in the asymmetric epoxidation of unfunctionalized olefins. - Keywords: asymmetric epoxidations; catalysis; manganese complexes; structure elucidation