(DMOA)‐derived meroterpenoid scaffolds has yet to be reported despite great interest from the chemistry and biomedical research communities. A concise synthetic route with the potential to access DMOA‐derived meroterpenoids is highly desirable to create a library of related compounds. Herein, we report novel dearomatization methodology followed by polyene cyclization to access DMOA‐derived meroterpenoid frameworks
Michael Addition of Lithio-?-(methyldiphenylsilyl)acetate to Cyclopentenone: A direct synthesis of (�)-methyl jasmonate
作者:Wolfgang Oppolzer、Modao Guo、Kurt Baettig
DOI:10.1002/hlca.19830660725
日期:1983.11.2
Aprotic 1,4-addition of a lithiated α-(methyldiphenylsilyl)acetate to cyclopentenone and in situ enolate alkylation provides a direct synthesis of (±)-methyl jasmonate (Scheme 3).
Silver-catalyzed silicon–hydrogen bond functionalization by carbene insertion
作者:M. José Iglesias、M. Carmen Nicasio、Ana Caballero、Pedro J. Pérez
DOI:10.1039/c2dt31460f
日期:——
functionalization of silicon–hydrogen bonds by means of the insertion of carbene units :CHCO2Et from ethyl diazoacetate (EDA) has been achieved using a silver-based catalyst, constituting the first example of this metal to promote this transformation. Competition experiments have revealed that the relative reactivity of substituted silanes depends on the bond dissociation energy of the Si–H bond (tertiary >
作者:N. Ya. Grigorieva、O. A. Pinsker、A. V. Buevich、A. M. Moiseenkov
DOI:10.1007/bf00702395
日期:1995.3
A highly-stereoselective method (90 % of theZ-isomer) was developed for the Petersonolefination of ketones with nerylacetone (1) as an example. The method is based on the introduction of a PhS group, which is removed after completion of the reaction, at the ketone C(3) atom.