Chemistry of diorganocuprates containing functionalized ligands. 2. Methodology for conjugate addition of synthetic equivalents of enolates and acyl anions
Novel Reactivity of N-Bridged Diiron Phthalocyanine in the Activation of CH Bonds: Hydroacylation of Olefins as an Example of the Efficient Formation of CC Bonds
作者:Leonardo X. Alvarez、Evgeny V. Kudrik、Alexander B. Sorokin
DOI:10.1002/chem.201100650
日期:2011.8.16
Bridge over troubled iron: An N‐bridged diiron tetra‐tert‐butylphthalocyanine complex, usually employed for oxidation reactions, also catalyzes the addition of acetaldehyde to olefins (see scheme) to provide methylketones with a high selectivity (up to 92 %) and high turnover numbers (3600–5700).
The present invention provides a compound represented by the following formula (I) or its pharmaceutically acceptable salt:
[wherein, R
1
represents optionally substituted C
1-4
alkyl, n shows integer of 1 to 4, R
2
represents optionally substituted C
1-4
alkyl or hydrogen atom, R
3
represents optionally substituted C
1-4
alkyl, R
4a
, R
4b
, R
4c
, and R
4d
, similarly or differently, represent optionally substituted C
6-14
aryl, optionally substituted C
1-4
alkyl, or hydrogen atom and the like, A represents optionally substituted C
6-14
aryl or optionally substituted 5 to 11 membered heteroaryl].
Samarium diiodide-mediated pinacolization of diketones—II. Synthesis of polycyclic frameworks containing a cyclobutane-1,2-diol and a cyclopentane-1,2-diol
The title reaction has been applied to the synthesis of a variety of polycyclic networks. Scope and limitations of the procedure are evaluated.
标题反应已应用于多种多环网络的合成。评估程序的范围和局限性。
Selective catalyzed-rearrangement of terminal epoxides to methyl ketones
作者:J. Prandi、J.L. Namy、G. Menoret、H.B. Kagan
DOI:10.1016/0022-328x(85)87389-7
日期:1985.4
Terminal epoxides of the type have been selectively converted into methyl ketones by various catalysts. Some lanthanide derivatives, MnI2, and Co2(CO)8 gave the best results. The rearrangement of internal epoxides into ketones is much slower, allowing specific transformation of terminal epoxides. The scope of the reaction and tentative mechanisms are discussed.
Nucleophile Acylierung mit 2-Lithium-1,3-dithianen bzw. -1,3,5-trithianen<sup>1,2,3</sup>
作者:D SEEBACH
DOI:10.1055/s-1969-34190
日期:——
Preparative aspects of the chemistry of 2-lithium-1,3-dithianes and 2-lithium-1,3,5-trithianes are surveyed. In particular, nucleophillic acylation reactions using the mentioned lithium derivatives are discussed.