Showing papers on "Enone published in 1986"
299 citations
TL;DR: Chlorotrimethylsilane, particularly if combined with hexamethylphosphoric triamide or 4-dimethylaminopyridine, strongly promote the conjugate addition of stoichiometric organocopper reagents.
171 citations
132 citations
TL;DR: In this paper, a wide variety of products may be obtained at pressures of 5 kbar or less whereas most of the reactions do not occur at atmospheric pressure and are catalysed by tertiary amines and are very sensitive to pressure.
130 citations
101 citations
TL;DR: In this paper, Silyl enol ethers and ketene silyl acetates derived from ketones are converted into α,β-unsaturated ketones by reaction with allyl carbonate in acetonitrile using the palladium complex and tributyltin methoxide as bimetallic catalysts.
100 citations
TL;DR: Alkyl halides in the presence of zinc copper couple add smoothly to αenones and α-enals in aqueous solvents, which leads to the conjugate adducts in high yields as mentioned in this paper.
95 citations
95 citations
94 citations
88 citations
TL;DR: In this article, the reaction of methyl vinyl ketone with a variety of aldehydes, catalyzed by 1,4-diazabicyclo (2.2) octane (DABCO) in tetrahydrofuran, conveniently provides the corresponding α-methylene-β-hydroxyalkanones in good yields.
TL;DR: Synthese de benzoquinones-1,4, naphtoquinones -1, 4, benzofurannediones-4, 7 et benzo [b] thiophenediones -4,7 a partir de cyclobutene-2ones
Abstract: Synthese de benzoquinones-1,4, naphtoquinones-1,4, benzofurannediones-4,7 et benzo [b] thiophenediones-4,7 a partir de cyclobutene-2ones
TL;DR: This article showed that phenyl morpholino or pyrrolidino chromium carbene complexes with alkynes in DMF at 120-125°C resulted in exclusive formation of the indene derivatives.
TL;DR: Preparation de cetones macrocycliques en utilisant un hydrostannane organique comme reactif is described in this article, where the macrocyclique is used for the preparation of cetone macrocycles.
Abstract: Preparation de cetones macrocycliques en utilisant un hydrostannane organique comme reactif
TL;DR: In this article, pure methyl vinyl ketone and acrylonitrile react with aldehydes in the presence of 1,4-diazabicyclo[2.2] octane (DABCO) to give high yields of α-methylene-β-hydroxyketones and nitriles respectively.
TL;DR: In this article, a cross-aldol reaction of trimethylsilyl enol ether with aldehyde was successfully performed with the aid of catalytic amount of rhodium complex, [(COD)Rh(DPPB)] + X − (X = PF 6 and ClO 4 ) or Rh 4 (CO) 12, under neutral conditions.
TL;DR: In this article, a copper chromite catalyst was used for the hydrogenation of crotonaldehyde, methyl vinyl ketone and methacrolein, and the results showed that the high polarization of these molecules led mostly to a 1,4 addition process, whereas 1,2-hydrogenation reactions were observed with dienes.
TL;DR: The first total synthesis of the diterpene clerodane insect antifeedant ajugarin I (1) has been achieved as discussed by the authors, which reveals the use of the 1,3-dithiolane unit to stereochemically direct the conjugate addition of a but-3-enyl cuprate to set in place the C-10 sp3 carbon centre.
TL;DR: In this article, a basique basique d'alcoxy-and phenoxy-4 trihalogeno-1, 1, 1 butene-3ones-2 en les acides acryliques du titre; de la meme facon, synthese des heterocycles du titres a partir des trihalogensoacetyl-5 dihydro-3,4 pyrannes and trihalogeneoacetymethyl-4 dihydroid-2,3 furannes.
Abstract: Hydrolyse basique d'alcoxy- et phenoxy-4 trihalogeno-1,1,1 butene-3ones-2 en les acides acryliques du titre; de la meme facon, synthese des heterocycles du titre a partir des trihalogenoacetyl-5 dihydro-3,4 pyrannes et trihalogenoacetyl-4 dihydro-2,3 furannes
TL;DR: Preparation of dicetones and cetoacides: 1,5 acycliques possedant 2 ou 3 stereocentres as discussed by the authors, 1.
Abstract: Preparation de dicetones-1,5 et de cetoacides-1,5 acycliques possedant 2 ou 3 stereocentres
TL;DR: The reaction of terminal acetylenic ketones with NaI or LiBr gave almost exclusively Eβ-iodo- or E-β-bromovinyl ketones in trifluoroacetic acid as mentioned in this paper.