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The most-studied class of organoboron compounds has the formula BR n H 3−n. These compounds are catalysts, reagents, and synthetic intermediates. The trialkyl and triaryl derivatives feature a trigonal-planar boron center that is typically only weakly Lewis acidic. Except a few bulky derivatives, the hydrides (n = 1 or 2) dimerize, like ...
Ball-and-stick model of diphenylmethane. The benzhydryl compounds are a group of organic compounds whose parent structures include diphenylmethane (which is two benzene rings connected by a single methane), with any number of attached substituents, including bridges.
Phenylboronic acid or benzeneboronic acid, abbreviated as PhB(OH) 2 where Ph is the phenyl group C 6 H 5 - and B(OH) 2 is a boronic acid containing a phenyl substituent and two hydroxyl groups attached to boron.
The methylene group in diphenylmethane is mildly acidic with a pK a of 32.2, and so can be deprotonated with sodium amide. [3] (C 6 H 5) 2 CH 2 + NaNH 2 − → (C 6 H 5) 2 CHNa + NH 3. The resulting carbanion can be alkylated. For example, treatment with n-bromobutane produces 1,1-diphenylpentane in 92% yield. [4]
The B-B bond adds across alkenes and alkynes to give the 1,2-diborylated alkanes and alkenes. Using various organorhodium or organoiridium catalysts, it can also be installed onto saturated hydrocarbons: [3] CH 3 (CH 2) 6 CH 3 + [pinB] 2 → pinBH + CH 3 (CH 2) 7 Bpin. These reactions proceed via boryl complexes. Bis(pinacolato)diboron can also ...
Ameltolide, a 4-aminobenzamide derivative, is an experimental anticonvulsant agent, effective at inhibiting seizures in animal models. [1] It is non-toxic at dosing levels and no undesirable side effects are attributable to its application. [2]
Dimethylbenzylamine is the organic compound with the formula C 6 H 5 CH 2 N(CH 3) 2. The molecule consists of a benzyl group, C 6 H 5 CH 2, attached to a dimethylamino functional group. It is a colorless liquid. It is used as a catalyst for the formation of polyurethane foams and epoxy resins.
3) 3] 2 and triethylborane generates the less substituted (and less stable) enolate. After reaction with methyl iodide the former mixture gives 2,2-dimethylcyclohexanone in 90% yield while the latter produces 2,6-dimethylcyclohexanone in 93% yield. [7] [8] The Et stands for ethyl group CH 3 CH 2 −.
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