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Dienes Vilsmeier-Haack reaction

Pyridines have been synthesized from an unusual Vilsmeier-Haack reaction where POCl3 dehydrates the appropriate enol to give a diene which in turn reacts with the Vilsmeier reagent leading to an iminium salt which subsequently cyclizes (Scheme 104 Table 7) <2002TL2273>. [Pg.282]

Dienes participate in the Vilsmeier-Haack reaction as illustrated by formation of aldehydes (40) and (41) from steroid derivatives (42) and (43) respectively. Carbon-carbon bond migration also occurs in these two reactions and the corresponding aldehydes (44) and (45) are produced as by-products. 1,3,5-Trienes also yield aldehyde derivatives in the Vilsmeier-Haack reaction. ... [Pg.782]

See other pages where Dienes Vilsmeier-Haack reaction is mentioned: [Pg.785]    [Pg.785]    [Pg.785]    [Pg.35]    [Pg.727]    [Pg.468]    [Pg.174]   
See also in sourсe #XX -- [ Pg.2 , Pg.782 ]

See also in sourсe #XX -- [ Pg.782 ]

See also in sourсe #XX -- [ Pg.782 ]

See also in sourсe #XX -- [ Pg.2 , Pg.782 ]

See also in sourсe #XX -- [ Pg.782 ]



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Diene reaction

Dienes, reactions

Haack

Haack Reaction

Vilsmeier

Vilsmeier-Haack

Vilsmeier-Haack reaction

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