Titlebook: Organic Synthesis via Organometallics (OSM 4); Proceedings of the F Dieter Enders,Hans-Joachim Gais,Wilhelm Keim Conference proceedings 199

鋸齒狀

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COMA

https://doi.org/10.1007/978-3-322-84062-2Chemie; Kohlenstoff; Organometallchemie; Oxidation; Reaktionen; Rearrangement; Synthese; Wasserstoff; metall

合適

Chiral Aminal Templates. Diastereo- and enantioselectivity in 1,4 (conjugate) and 1,2 Additions witd 1,2 additions to prochiral substrates. Steric control or chelation control may account of the high diastereoselectivity observed in these reactions, according to the organometallic reagent and to the solvent.

字的誤用

Synthetic Applications of Mercury Photosensitization,ence of H.. Radicals formed in the gas phase recombine and disproportionate, but the disproportionation product is returned to the radical pool by H atom addition. The dehydrodimer is protected from further conversion by condensation. Other reactive gases, such as O., CO, and SO. lead to functionalized products.

Anthrp

內(nèi)部

New Developments in Zinc-mediated Organic Synthesis,pendent syntheses of some of the proposed cationic and neutral (radical) organozinc intermediates are described as well as the unique reactivity of these organozinc species which leads to selective synthesis of .lactams, 2- and 3-pyrrolidinones and indolizines.

entice

,α-Heteroalkenyl Metallate Rearrangements in Organic Synthesis,,4-dihydro-2H-pyrans is compared with borates and cuprates derived from α-metallated enol carbamates. Depending on the metallate complex and the substrate, 1,2-alkyl shifts can take place by several mechanisms.

尋找

Cleavage of the Carbon-Hydrogen Bond on Achiral and Chiral Transition Metal Complexes,P) Ru (0) show a clear-cut preference for insertion across the unhindered .- and .-C-H bonds. In no case is activation of the weak benzylic C-H bonds observed. In contrast, reduction of (pp.) (Me3 P) RuCl. (“pp.” = MeP-(CH. CH. CH. PMe.) 2 ) in mesitylene produces, via (pp2)(Me3 P) Ru (0) and (pp2)

儀式

,Methylidenetitanacyclobutane vs. Titanocene-Vinylidene — Versatile Building Blocks,her hand cycloreversion products can be prepared due to the typical vinylidene character of .. By reaction of . with metal carbonyls, followed by a vinylidene-acetylene rearrangement, 5-membered cyclic FISCHER-Carbene complexes can be isolated in high yield.

neutralize

eilsarkomen. Auch spezielle Therapieverfahren, wie Extremit?tenperfusion und Hyperthermie werden besprochen. ?rzte in Klinik und Praxis erhalten mit diesem Buch kompetente Unterstützung für die optimale Betreuung von Patienten mit Weichteilsarkomen.978-3-642-04939-2