93175-56-5Relevant articles and documents
3-Metallated enamines XI. Transmetallation of 3-Stannylated enamines - A new method to generate 1-aminoallyllithium compounds
Ahlbrecht,Weber
, p. 1018 - 1025 (2007/10/02)
The transmetallation of 3-stannylated enamines, 1-morpholino-3-(trialkylstannyl)cycloalk-1-enes and 3-morpholino-5-(tributylstannyl)hex-3-ene, with butyllithium is a new and general way to generate s1-aminoallyllithium compounds. Stabilization by aromatic substituents is not further necessarily as in the case of preparation by deprotonation and even the thermodynamically less stable exoamino derivatives are accessible. Therefore homoenolate-equivalents of cyclic ketones are made available. Thus, the corresponding 3-alkylated or 3-silylated cycloalkanones and alken-3-ones were prepared via the 1-morpholinoallyllithium compounds.
Ultrasound in Organic Synthesis. 7. Preparation of Organozinc Reagents and Their Nickel-Catalyzed Reactions with α,β-Unsaturated Carbonyl Compounds
Petrier, Christian,Barbosa, Jayne C. de Souza,Dupuy, Claude,Luche, Jean-Louis
, p. 5761 - 5765 (2007/10/02)
Diorganozinc compounds can be prepared with great ease and efficiency in a one-pot process, by sonication of lithium, an organic halide, and a zinc halide in THF or toluene mixtures.The reagents thus obtained give rise to clean and selective conjugate additions to α,β-unsaturated aldehydes and ketones in the presence of catalytic amounts of nickel acetylacetonate.
ULTRASOUND IN ORGANIC SYNTHESIS 6. AN EASY PREPARATION OF ORGANOZINC REAGENTS AND THEIR CONJUGATE ADDITION TO α-ENONES
Petrier, Christian,Luche, Jean-Louis,Dupuy, Claude
, p. 3463 - 3466 (2007/10/02)
Sonication allows the efficient preparation of various organozinc reagents, which cleanly add in a conjugate fashion to α-enones in the presence of Ni(acac)2.