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Addition to carbon-nitrogen

Ester enolates which contain the chiral information in the acid moiety have been widely used in alkylations (see Section D.1.1.1,3.) as well as in additions to carbon-nitrogen double bonds (sec Section D.1.4.2.). Below are examples of the reaction of this type of enolate with aldehydes720. The (Z)-enolate generated from benzyl cinnamate (benzyl 3-phenylpropcnoate) and lithium (dimethylphenylsilyl)cuprate affords the /h/-carboxylic acid on addition to acetaldehyde and subsequent hydrogenolysis, The diastereoselectivity is 90 10. [Pg.486]

In addition to carbon, nitrogen and phosphorus are also essential to produce biomass. Other micro-nutrients such as sulphur, potassium, sodium, calcium, magnesium and some metals are necessary to maintain microbial viability. [Pg.64]

ADDITIONS TO CARBON-NITROGEN AND CARBON-OXYGEN MULTIPLE BONDS, AND 815... [Pg.779]

The nucleophilic nature of these radicals allows addition to carbon-nitrogen multiple bonds, and in selected cases this has been demonstrated. Suitable substrates for such additions include protonated pyridines, thiazoles and imidazoles (equation 183), and nitroalkyl anions359. Yamamoto and coworkers have also described cobalt-mediated multiple additions of carbon tetrahalides, benzyl bromides or a-bromo ketones to isocyanides, which are postulated to occur through the corresponding alkylcobalt(III) complexes360. [Pg.1331]

Lewis acid-mediated nucleophilic additions to carbon-nitrogen double bond have been applied to the synthesis of homoallylic amines.1 3 Three-component syntheses of homoallylic amines starting from aldehydes, amines, and allyltributyltin are realized in the presence of Lewis acids such as La(OTf)3, Bi(OTf)3, LiClOa (Equation (47)).154-156... [Pg.354]

Cyclic organic compounds are classified as carbocycles or as heterocycles. CarbocycJic rings contain only carbon atoms, but heterocyclic rings contain one or more different atoms in addition to carbon. Nitrogen, oxygen, and sulfur are the most common heteroatoms. [Pg.1150]

Nitrilimine Addition to Carbon-Nitrogen Double Bonds.198... [Pg.169]

Similarly, the acid-catalysed hydrolysis ofoximes " or of nitriles or amides doubtless involve electrophilic addition to carbon-nitrogen multiple bonds. [Pg.70]

See other pages where Addition to carbon-nitrogen is mentioned: [Pg.627]    [Pg.627]    [Pg.512]    [Pg.26]    [Pg.88]    [Pg.90]    [Pg.92]    [Pg.94]    [Pg.96]    [Pg.98]    [Pg.100]    [Pg.102]    [Pg.104]    [Pg.106]    [Pg.108]    [Pg.88]    [Pg.90]    [Pg.92]    [Pg.94]    [Pg.96]    [Pg.98]    [Pg.100]    [Pg.102]    [Pg.104]    [Pg.106]    [Pg.108]    [Pg.71]    [Pg.72]    [Pg.267]    [Pg.273]    [Pg.564]    [Pg.281]    [Pg.144]    [Pg.144]   


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Addition to Nitrogen

Addition to carbon

Addition to carbon-nitrogen double

Addition to carbon-nitrogen double bonds

Addition to the carbon-nitrogen multiple bonds

Additives carbon

Carbon addition

Nitrogen addition

Nitrogen to carbon

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