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Zinc-copper reagent

Substitution Reactions with Copper-Zinc Reagents... [Pg.62]

The Michael addition of the copper-zinc reagent derived from ethyl 4-bromobntyrate to the plperonal-derived nitroalkene proceeds cleaniy to give the nitre ester, which is an intermediate for the synthesis of lycoricidine alkaloids fEq. 4.85. ... [Pg.98]

Mixed copper-zinc reagents also react with alkynes to give alkenylcopper species that can undergo subsequent electrophilic substitution. [Pg.695]

Scheme 2.38. Reactions between copper-zinc reagents and cationic metal complexes. Scheme 2.38. Reactions between copper-zinc reagents and cationic metal complexes.
Scheme 2.39. Cross-coupling between copper-zinc reagents and alkyl iodides. Scheme 2.39. Cross-coupling between copper-zinc reagents and alkyl iodides.
Scheme 2.40. Alkynylation of chiral secondary copper-zinc reagents. Scheme 2.40. Alkynylation of chiral secondary copper-zinc reagents.
Scheme 2.41. Substitution reactions with copper-zinc reagents by addition-elimination mecha-... Scheme 2.41. Substitution reactions with copper-zinc reagents by addition-elimination mecha-...
Scheme 2.43. Michael additions of copper-zinc reagents to enones. Scheme 2.43. Michael additions of copper-zinc reagents to enones.
Scheme 2.44. Addition-elimination reactions involving copper-zinc reagents. Scheme 2.44. Addition-elimination reactions involving copper-zinc reagents.
Scheme 2.48. Intermolecular and intramolecular carbometalation of alkynes with copper-zinc reagents. Scheme 2.48. Intermolecular and intramolecular carbometalation of alkynes with copper-zinc reagents.
Scheme 8.3. Conjugate Addition and Alkylation Reactions of Mixed Copper-Zinc Reagents... Scheme 8.3. Conjugate Addition and Alkylation Reactions of Mixed Copper-Zinc Reagents...
SCHEME 76. Opening of a, -unsaturated epoxides with copper-zinc reagents... [Pg.337]

Functionalized heterocycles such as 308 can be prepared in a one-pot synthesis, in which the key step is the addition-elimination of a functionalized copper-zinc reagent 309 to the unprotected 3-iodoenone 310, producing the annelated heterocycle 308 in 41% (Scheme 87) . ... [Pg.344]

SCHEME 87. Addition-elimination reactions of copper-zinc reagents with various Michael acceptors bearing a leaving group in h -position... [Pg.345]

SCHEME 93. Addition reactions of zinc and copper-zinc reagents to carbonyl compounds... [Pg.351]

Copper-zinc reagents add to various pyridinium salts leading either to the 1,2- or to the L4-adduct, depending on the substituent pattern of the pyridine ring (Scheme 95) 2 . ... [Pg.352]

SCHEME 95. Addition of copper-zinc reagents to pyridinium salts... [Pg.352]

See other pages where Zinc-copper reagent is mentioned: [Pg.65]    [Pg.56]    [Pg.566]    [Pg.694]    [Pg.56]    [Pg.65]    [Pg.65]    [Pg.489]    [Pg.303]    [Pg.303]    [Pg.334]    [Pg.337]    [Pg.353]    [Pg.355]    [Pg.358]    [Pg.606]   
See also in sourсe #XX -- [ Pg.155 ]

See also in sourсe #XX -- [ Pg.155 ]



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