Alkylation of γ-cyclodextrin with 3 equiv. of 1,3-bis[bis(4-tert-butylphenyl)chloromethyl]benzene, followed by permethylation afforded selectively a singly capped (A,B), as well as two doubly capped (A,B:D,E and A,B:E,F) methylated γ-CDs. Deprotection with HBF4 gave quantitatively the corresponding diols and tetrols, which constitute valuable starting compounds for further functionalisation.

• Bis(2,4-di-tert-butylphenyl)Phosphate can induce subtle pre-lethal cytotoxic effects on Chinese hamster ovary cellular health After 48 h exposure, bis(2,4-di-tert-butylphenyl)Phosphate increased nuclear intensity in cells. Exposure to showed a dose- and time-dependent reduction mitochondrial mass. increase reactive oxygen species time- dependent manner. (bDtBPP) leaches out of polyethylene fi...

The first tetra-substituted non-fused chrysene, 3,6,9,12-tetrakis(4-tert-butylphenyl)chrysene with blue electroluminescence at 450 nm, and with a radiance of 500 cd m(-2), was synthesized by a two-step procedure: direct bromination of chrysene in trimethyl phosphate, followed by palladium-catalyzed cross-coupling of tetrabromochrysene and tert-butylphenylboronic acid .

Monodisperse butylphenyl-functionalized palladium (Pd-BP, dia. 2.24 nm) nanoparticles were synthesized through co-reduction of butylphenyldiazonium and H(2)PdCl(4) by NaBH(4). Because of this unique surface functionalization and a high specific electrochemical surface area (122 m(2) g(-1)), the Pd-BP nanoparticles exhibited a mass activity ∼4.5 times that of commercial Pd black for HCOOH electr...

As a first example of opening a secondary aziridine with a tertiary carbanion, the title amines (3a-c, aryl = phenyl, 4-tert-butylphenyl,2-naphthyl) were synthesized by opening N-(diphenylphosphinoyl)-7-azabicyclo[4.1.0]heptane, aziridine 1, with the corresponding alpha-potassium isopropylarenes, followed by a hydrolysis of the resulting phosphinamides 2a-c.

An optically active, π-stacked poly[2,7-bis(4-tert-butylphenyl)dibenzofulvene] having a preferred-handed helical conformation was synthesized by anionic polymerization. A thin film sample of the polymer exhibited broad-band white circularly polarized light (CPL) emission on photo excitation.

The catalytic asymmetric Michael addition/desymmetrization reaction of N-(2-t-butylphenyl)maleimides with unprotected 3-substituted-2-oxindoles was successfully realized using a chiral N,N'-dioxide-Sc(III) complex, leading to succinimides with two kinds of stereogenic elements—atom chirality and axial chirality—in up to 99% yield, 99% ee and >19 : 1 d.r.

Switchable β-cyclodextrin (β-CD)-induced hydrolysis of m-tert-butylphenyl acetate is demonstrated in the presence of supramolecular β-CD/adamantane oligonucleotide scaffolds. In one system, a duplex between a β-CD-functionalized nucleic acid and an adamantane-nucleic acid leads to a switchable catalytic system. In a second system, a β-CD/adamantane duplex is cooperatively generated by K(+)-stab...