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Collidine, decarboxylation

In addition to the classic sequence of saponification-acidification followed by heating, the decarboxylation of (3-keto esters can be effected by more direct methods such as decarbalkoxylation. For example, heating (3-keto esters in the presence of lithium halides in H2O-DMSO25 or in H20-collidine produces ketone products in one-pot transformations, as shown below. [Pg.221]

Colchicine, 920 s-Collidine, 155, 194, 617 Congressane, 1209 Coniferyl aldehyde, 134 Copper, decarboxylation catalyst, 157-158, 975... [Pg.704]

Saponification of the less hindered carbethoxy group of 59a gave 59b, which was decarboxylated (2,4,6-collidine, 160 °C) to a mixture of 3,4-cis (major) and... [Pg.623]

See other pages where Collidine, decarboxylation is mentioned: [Pg.121]    [Pg.377]    [Pg.129]    [Pg.183]    [Pg.147]    [Pg.146]    [Pg.36]    [Pg.41]    [Pg.1321]    [Pg.28]    [Pg.472]    [Pg.319]   
See also in sourсe #XX -- [ Pg.464 , Pg.469 , Pg.472 , Pg.473 ]



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Collidin

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