The first allylic carbonylation reaction of allylic acetates with aryl boronic acids has been developed.
已开发出烯丙基乙酸酯与芳基硼酸的第一个烯丙基羟酰化反应。
Synthesis of α,β-Unsaturated Ketones by Pd-Catalyzed Decarboxylative Allylation of α-Oxocarboxylates
作者:Nuria Rodríguez、Filipe Manjolinho、Matthias F. Grünberg、Lukas J. Gooßen
DOI:10.1002/chem.201102584
日期:2011.12.2
A palladium/p‐tolylphosphine system has been developed that catalyzes the extrusion of carbon dioxide from α‐oxocarboxylic acid allyl esters, leading to α,β‐unsaturated ketones (see scheme). The palladium complex activates the substrate and mediates the carbon–carbon bond formation to give allyl ketones, and subsequent double bond shift to the α,β position. The actual decarboxylation step with formation
Hydrazonyl Radical-Participated Tandem Reaction: A Strategy for the Synthesis of Pyrazoline-Functionalized Oxindoles
作者:Xiao-Yong Duan、Xiu-Long Yang、Pan-Pan Jia、Man Zhang、Bing Han
DOI:10.1021/acs.orglett.5b03003
日期:2015.12.18
efficient and practical tandem cyclization/addition/cyclization strategy is developed for the initial generated hydrazonylradicals derived from the oxidation of β,γ-unsaturatedhydrazones. By using this protocol, structurally novel pyrazoline-functionalized oxindoles are prepared by the reaction of easily accessible β,γ-unsaturatedhydrazones with N-aryl acrylamides under the metal- and solvent-free conditions
Oxidative rearrangement of 2-alkoxy-3,4-dihydro-2H-pyrans: stereocontrolled synthesis of 4,5-cis-disubstituted tetrahydrofuranones including whisky and cognac lactones and crobarbatic acid
Oxidation of 2-alkoxy-3,4-dihydro-2H-pyrans 3 with dimethyldioxirane or MTO/urea–H2O2 followed by Jones oxidation leads to rearrangement and stereocontrolled formation of 4,5-cis-disubstituted tetrahydrofuranones. The method is applied to the synthesis of the whisky lactone 9, cognac lactone 10 and crobarbatic acid 17.
用二甲基二环氧乙烷或MTO /脲-H 2 O 2氧化2-烷氧基-3,4-二氢-2 H-吡喃3,然后进行琼斯氧化,导致4,5-顺式-二取代的四氢呋喃酮的重排和立体形成。该方法适用于威士忌内酯9,白兰地内酯10和巴巴果酸17的合成。
KETOBENZOFURAN DERIVATIVES, METHOD FOR SYNTHESIZING SAME, AND INTERMEDIATES
申请人:BAILLY Frederic
公开号:US20130012729A1
公开(公告)日:2013-01-10
The present disclosure relates to ketobenzofuran derivatives of the general formula (I):
as well as to a method of synthesizing the same by coupling a quinonimine and an enaminone by a Nenitzescu reaction and to the intermediates of the synthesis thereof.