Two approaches to the synthesis of 9-oxo-and 10-hydroxy-2E-decenoic acids, important components of queen substance and royal jelly of honeybees Apis mellifera
Tandem Catalysis: The Sequential Mediation of Olefin Metathesis, Hydrogenation, and Hydrogen Transfer with Single-Component Ru Complexes
作者:Janis Louie、Christopher W. Bielawski、Robert H. Grubbs
DOI:10.1021/ja016431e
日期:2001.11.1
extensive use in olefin metathesis, it was also recently shown to be an effective precatalyst for mediating radical additions and hydrogenation reactions. We recently demonstrated all three reactions could be performed in tandem to afford well-defined block copolymers. Herein, we report that complex 1, or its more active derivative 2, is also useful in mediating a variety of other catalytic hydrogenation
Methylene C(sp<sup>3</sup>)–H Arylation of Aliphatic Ketones Using a Transient Directing Group
作者:Kai Hong、Hojoon Park、Jin-Quan Yu
DOI:10.1021/acscatal.7b02905
日期:2017.10.6
Palladium-catalyzed methylene β-C(sp3)–Harylation of aliphatic ketones using a transient directing group is developed. The use of α-benzyl β-alanine directing group that forms a six-membered chelation with palladium is crucial for promoting the methylene C(sp3)–H bond activation.
Preparation of Aliphatic Ketones through a Ruthenium-Catalyzed Tandem Cross-Metathesis/Allylic Alcohol Isomerization
作者:David Finnegan、Benjamin A. Seigal、Marc L. Snapper
DOI:10.1021/ol060918g
日期:2006.6.1
shown to be effective catalysts for cross-metatheses of allylic alcohols with cyclic and acyclic olefins, as well as isomerization of the resulting allylic alcohols to alkyl ketones. The net result of this new tandem methodology is a single-flask process that provides highly functionalized, ketone-containing products from simple allylic alcohol precursors. [reaction: see text]
作者:G. Yu. Ishmuratov、M. P. Yakovleva、L. P. Botsman、N. M. Ishmuratova、R. R. Muslukhov、G. V. Khambalova、G. A. Tolstikov
DOI:10.1023/a:1024172327822
日期:——
Condensation of 7-oxooctanal with malonic acid in a Doebner reaction produces 9-oxo-2E-decenoic acid (42% yield) and a comparable amount of products from Tishchenko disproportionation of the starting aldehyde (7-oxooctyl-7-oxooctanoate) and re-esterification by acetic acid (7-oxooct-1-ylacetate and 7-oxooctanoic acid).
NOMURA, MASATO;FUJIHARA, YOSHIHITO, YUKAGAKU, 37,(1988) N, S. 453-457