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Carbonyl Compounds_ Properties and Reactions
Carbonyl Compounds_ Properties and Reactions

... Weaker polarity means aldehydes and ketones mix well with polar solvents such as water and will dissolve many organic compounds. ...
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... Compounds of nitrogen: ammonia – manufacture by Haber’s process, properties – basic character, reaction with ZnSO4 and Cu2+ ion. Nitric acid – manufacture by Ostwald’s process , laboratory method – from NaNO3, properties – oxidizing properties – dilute HNO3 with Zn and Cu, concentrated HNO3 with Cu, ...
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The Hydroxylation of Aromatic Nitro Compounds by Alkalies

... should diminish the yield; but no such diminution occurs. The only remaining product is water; and this is now believed to render the potassium hydroxide incapable of further reaction by coating the surface. Wohl's statement that the hydroxylation proceeds in the absence of air Is true. but then the ...
Learning Guide for Chapter 23: Amines
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Unit D: Quantitative Relationships in Chemical Change
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... Methylene groups appear in the field of 2880 – 2980 cm–1 in the form of weak and medium bands, the absorption band of CF2 -H bond lies in the field of higher wave numbers 2995 – 3050 cm–1 because of the presence of electronegative fluorine atoms, very weak intensity is typical for it. The absorption ...
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... 1. Cold, dilute, permanganate (KMnO4) can be used to convert alkenes to cis-diols 2. Osmium tetroxide (toxic, expensive, used in catalytic amount) (OsO4) can be used to convert alkenes to cis diols B. Alkenes can be converted to carbonyl compounds (aldehydes and ketones) through a cis-diol intermedi ...
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... 2. Explain the difference between 10, 20 and 30 alkyl halides, with suitable examples. 3. Allyl halides are more reactive than alkyl halides. Why? 4. What are the reagents required prepare alkyl halide from the following (i) alcohol (ii) alkene (iv) alkanes 5. Explain the reactions used to convert b ...
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... Our synthesis commenced with a Sonogashira crosscoupling of the aryl halide 15 with propargyl alcohol 16 to give 17 (83%). This substituted alkynol was then subjected to the standard carbometalation protocol with phenylmagnesium chloride followed by the addition of Pd(PPh3)4 and phenyl iodide as the ...
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Nucleophilic Substitution and b

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Ester-containing polyols having halogen and phosphorus atoms

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Blue and Red Gradient

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Drawing Organic Structures Functional Groups Constitutional Isomers

< 1 ... 57 58 59 60 61 62 63 64 65 ... 157 >

Petasis reaction



The Petasis reaction (alternatively called the Petasis borono–Mannich (PBM) reaction) is the chemical reaction of an amine, aldehyde, and vinyl- or aryl-boronic acid to form substituted amines.Reported in 1993 by Nicos Petasis as a practical method towards the synthesis of a geometrically pure antifungal agent, naftifine, the Petasis reaction can be described as a variation of the Mannich reaction. Rather than generating an enolate to form the substituted amine product, in the Petasis reaction, the vinyl group of the organoboronic acid serves as the nucleophile. In comparison to other methods of generating allyl amines, the Petasis reaction tolerates a multifunctional scaffold, with a variety of amines and organoboronic acids as potential starting materials. Additionally, the reaction does not require anhydrous or inert conditions. As a mild, selective synthesis, the Petasis reaction is useful in generating α-amino acids, and is utilized in combinatorial chemistry and drug discovery.
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