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Zinc reagents enone reactions

The reaction of 4-bromotoluene with lithium in the presence of zinc bromide in ether affords the corresponding zinc reagent 118, which undergoes a smooth 1.4-addition to ster-ically hindered enones and leads to the cyclopentanone 119 in 84% yield (Scheme 40). [Pg.311]

See other pages where Zinc reagents enone reactions is mentioned: [Pg.219]    [Pg.65]    [Pg.114]    [Pg.695]    [Pg.107]    [Pg.65]    [Pg.114]    [Pg.65]    [Pg.114]    [Pg.887]    [Pg.774]    [Pg.293]    [Pg.343]    [Pg.368]    [Pg.38]    [Pg.386]    [Pg.229]    [Pg.121]    [Pg.616]    [Pg.65]    [Pg.114]    [Pg.48]    [Pg.66]    [Pg.70]    [Pg.329]    [Pg.66]    [Pg.231]    [Pg.69]    [Pg.80]    [Pg.261]    [Pg.333]    [Pg.343]    [Pg.345]    [Pg.366]    [Pg.257]    [Pg.301]    [Pg.323]    [Pg.161]    [Pg.118]    [Pg.126]    [Pg.233]    [Pg.178]    [Pg.64]    [Pg.118]    [Pg.126]    [Pg.233]   
See also in sourсe #XX -- [ Pg.2 ]



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