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Important Chiral Thio urea Organocatalysts

The majority of the organocatalysts that are commonly employed are chiral Lewis or Brpnsted bases, and the catalytic potential of base functionalities has been referred to in previous chapters to some extent already. As discussed before, the use of chiral primary or secondary amines for enamine or iminium activation belongs to the most important applications of asymmetric organocatalysts nowadays. In addition, also the interplay between an acidic (thio)urea and a basic amine separated by a chiral linker was shown to enable the simultaneous activation of both the electrophile and nucleophile. In addition to such bifunctional thiourea-containing acid-base catalysts, chiral catalysts containing a (Lewis or... [Pg.218]

See other pages where Important Chiral Thio urea Organocatalysts is mentioned: [Pg.318]    [Pg.319]    [Pg.321]    [Pg.323]    [Pg.331]    [Pg.333]    [Pg.335]    [Pg.318]    [Pg.319]    [Pg.321]    [Pg.323]    [Pg.325]    [Pg.327]    [Pg.329]    [Pg.331]    [Pg.333]    [Pg.335]    [Pg.318]    [Pg.319]    [Pg.321]    [Pg.323]    [Pg.331]    [Pg.333]    [Pg.335]    [Pg.318]    [Pg.319]    [Pg.321]    [Pg.323]    [Pg.325]    [Pg.327]    [Pg.329]    [Pg.331]    [Pg.333]    [Pg.335]    [Pg.331]    [Pg.336]    [Pg.336]    [Pg.186]    [Pg.392]    [Pg.112]    [Pg.318]    [Pg.318]   


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Chiral (Thio)-Ureas

Organocatalysts thio)urea

Urea, 1- -2-THIO

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