TETRAHEDRON LETTERS, vol.23, nr.50, 1982, pages 5315-5318, Oxford, GB MIWAKO MORI et al.: " Cyclization of alpha-haloamide with internal double bond by use of the low-valent metal complex. "Cyclization of α-halo amide with internal double bondby use of the low-valent metal complex. ...
A carbonyl functional group consists of a carbon atom which is double-bonded with an oxygen atom. The general structure of an amide is given as {eq}{\rm{R}}\left( {{\rm{C = O}}} \right){\rm{N}}{{\rm{R}}_1}{{\rm{R}}_2} {/eq}, where R, {eq}{{\rm{R}}_1,}\;...
89 Reaction of (123) with excess Bui2AlH gave (124) on hydrolysis (equation 174). It would appear that the initial reduction of the double bond resulted in elimination of diisobutylaluminum methoxide and formation of a second enamine which finally gave a stable diisobutylaluminum salt of the ...
N‐Alkynylated anilides can retain a trans conformation as secondary amides, in contrast with N‐alkyl and vinyl derivatives, which exist in cis conformation. From a structural perspective, the N‐alkynylated amide has a less C=N double bond character than those of N‐alkyl derivatives and ...
with pLys could be observed in neutral conditions (pH 7.4, Fig.2c), while complete conversion into Fe(CN)64−droplets was observed within 15 min under acidic conditions (pH 4), which we attribute to the spontaneous saturation to the spontaneous saturation of the 5-6 double bond in ...
The carbonyl group is composed of two carbon atoms that are double bonded to an oxygen atom. The amine group, in which a nitrogen atom shares a single bond with R groups, is the second. R groups can be regarded of as substituents for other atoms or molecules in a structure. ...
The metal‐free cleavage of the enaminone C=C double bond providing α‐ketoamides has been realized by the BPO/NIS‐initiated free radical cascade reactions. Isotopic labelling experiment confirms that air is the oxygen source in these reactions involving new carbonyl group formation. Abstract The...
(X-octadecenoyl)-beta-D-glucopyranosylamine [X = 13-cis (1), 11-cis (2), 9-cis (3), 6-cis (4), and 9-cis,12-cis (5)] and their saturated homologue N-octadecanoyl-beta-d-glucopyranosylamine (6), which differ in the position of a cis double bond in the C18 hydrocarbon ...
The stability and reactivity of the amide bond are associated with the planar resonance of the bond (15–20 kcal mol-1)8,9,10,11,12,13. However, any distortion of the amide bond, disrupting the planar conjugation, leads to notable changes in the physical and chemical properties of ...
Activation by addition of a carboxylic acid to a triple bond occurs with ethyl ethynyl ether,74,75which forms amidesviareactiveenolesters. The reaction is catalyzed by mercury(II) oxide under almost neutral conditions. Push–pullalkynesexert higher reactivity.76,77The intermediate enol esters (Scheme...