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The first palladium-catalyzed C-O bond formation method for the synthesis of silacarboxylates by silacarboxylic acids with a broad range of aryl iodides and iodo-N-heterocycles is reported. Electron-deficient, electron-rich, and sterically hindered aryl iodides were well-tolerated to furnish the corresponding aryl silacarboxylates in moderate to excellent yields. Active functional groups, such as -NH, -CHO, and allyl-, showed good tolerance, even in the large-scale synthesis. Double and triple esterification were also demonstrated to be effective.
This article was published in the following journal.
Name: Organic letters
A method for synthesis of N-arylpyrazoles by palladium-catalyzed coupling of aryl triflates with pyrazole derivatives is described. Using tBuBrettPhos as a ligand, the palladium-catalyzed C-N coupling...
A method for the direct methylation of aryl, heteroaryl, and vinyl boronate esters is reported, involving the reaction of iodomethane with aryl-, heteroaryl-, and vinylboronate esters catalyzed by pal...
By using diaryliodonium salts, a novel approach of a palladium-catalyzed cascade of diarylation/intramolecular dehydrogenative coupling reaction has been developed in the synthesis of phenanthro-imida...
Site-selective introduction of a sulfur group into aromatic compounds is essential and useful in organic, material, and pharmaceutical chemistry. A palladium/norbornene-catalyzed chemoselective ortho ...
Copper-catalyzed intermolecular annulation of 2-amine-[1,3,5]triazines and aryl nitriles for the synthesis of [1,2,4]triazolo [1,5-a][1,3,5]triazines is presented via the N-C bond formation and oxidat...
The Veterans Health Administration (VHA) has stated the need for a brief screening instrument that can assist with the triage of the enormous number of returning OEF/OIF veterans with conc...
The purpose of this study is to compare the clinical performance of three dental adhesive systems used to bond Class V cavity fillings in adult teeth.
There is increasing evidence that obesity is associated with increased urinary oxalate excretion, an important risk factor for calcium oxalate stone formation. By the administration of a c...
Cholesterol is the precursor of glucocorticoids, mineralocorticoids and sex steroids. Both adrenal and non-adrenal (ovarian + testicular) all steroid hormones are primarily synthesized usi...
Damage to teeth from decay or previous old silver fillings can be repaired with tooth-coloured filling materials that stick to the tooth. These materials have been around for some years an...
Organic chemicals where aryl or alkyl groups are joined by two nitrogen atoms through a double bond (R-N=N-R'; R and R' may be either aryl or alkyl). They may be used as DYES.
The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys.
A class of enzymes that catalyze the formation of a bond between two substrate molecules, coupled with the hydrolysis of a pyrophosphate bond in ATP or a similar energy donor. (Dorland, 28th ed) EC 6.
An enzyme which catalyzes the hydrolysis of an aryl-dialkyl phosphate to form dialkyl phosphate and an aryl alcohol. It can hydrolyze a broad spectrum of organophosphate substrates and a number of aromatic carboxylic acid esters. It may also mediate an enzymatic protection of LOW DENSITY LIPOPROTEINS against oxidative modification and the consequent series of events leading to ATHEROMA formation. The enzyme was previously regarded to be identical with Arylesterase (EC 22.214.171.124).
Organic compounds containing a carbon-nitrogen double bond where a NITROGEN atom can be attached to HYDROGEN or an alkyl or aryl group.