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From N-haloamines

Conditions PhH, dioxane, PhMe, CCI4 etc , 20-110 C 10 min-3 d Scheme 14 -Alkylaziridines from N-haloamines and alkenes... [Pg.475]

HOFMANN. LOEFFLER - FREYTAG PyitoHdineSynthesis Synthesis of pynolidines or piperidines from N-haloamines (free radical reaction). [Pg.321]

Synthesis of pyrrolidines and piperidines from N-haloamines via a free radical reaction (see 1st edition). [Pg.166]

A common feature of the reactions in this section is that they serve to introduce functionality at a position remote from functional groups already present. As such, they have proved very useful in synthesizing many compounds, especially in the steroid field (see also 19-2 and 19-14). When N-haloamines in which one alkyl group has a hydrogen in the 4 or 5 position are heated with sulfuric acid, pyrrolidines or piperidines are formed, in a reaction known as the Hofmann-Loffier reaction... [Pg.1462]

Intra- and inter-molecular substitution reactions (55) and (56) involving the dialkylamino radical cations formed from protonated N-haloamines are well known and are based upon the initial work of Hofmann (1883) and of... [Pg.308]

Besides the reactions discussed at 18-13-18-17, a number of other rearrangements are known in which an alkyl group migrates from C to N. Certain bicyclic A-haloamines, for example A-chloro-2-azabicyclo[2.2.2]octane (above), undergo... [Pg.1616]

See other pages where From N-haloamines is mentioned: [Pg.1416]    [Pg.548]    [Pg.1097]    [Pg.1153]    [Pg.421]    [Pg.208]    [Pg.401]    [Pg.301]    [Pg.83]    [Pg.531]    [Pg.83]    [Pg.349]    [Pg.998]    [Pg.148]    [Pg.741]    [Pg.741]    [Pg.83]    [Pg.148]    [Pg.48]    [Pg.87]    [Pg.998]    [Pg.4452]    [Pg.474]    [Pg.499]    [Pg.98]   
See also in sourсe #XX -- [ Pg.1670 ]



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Haloamination

Haloamines

N-Haloamine

N-Haloamines

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