254 results on '"Alkadienes chemical synthesis"'
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102. Gold(I)-catalyzed Claisen rearrangement of allenyl vinyl ethers; synthesis of substituted 1,3-dienes.
103. Cu(I)-catalyzed tandem benzyldiazoester coupling with terminal alkyne-allene formation-Michael reaction: application to the syntheses of oxa and azacycles.
104. Zinc-catalyzed allenylations of aldehydes and ketones.
105. Methods for the preparation of allenes employing indium- and zinc-mediated dehalogenation reactions in aqueous solutions.
106. exo-Selective asymmetric Diels-Alder reaction of 2,4-dienals and nitroalkenes by trienamine catalysis.
107. Ruthenium-catalyzed cyclizations of enynes via a ruthenacyclopentene intermediate: development of three novel cyclizations controlled by a substituent on alkyne of enyne.
108. Enantioselective synthesis of siloxyallenes from alkynoylsilanes by reduction and a Brook rearrangement and their subsequent trapping in a [4+2] cycloaddition.
109. Synthesis of 86 species of 1,5-diaryl-3-oxo-1,4-pentadienes analogs of curcumin can yield a good lead in vivo.
110. Regio- and stereoselective synthesis of 2-amino-1,3-diene derivatives by ruthenium-catalyzed coupling of ynamides and ethylene.
111. Copper-catalyzed synthesis of 2,4-disubstituted allenoates from α-diazoesters.
112. α,β-Divinyl tetrahydropyrroles as chiral chain diene ligands in rhodium(I)-catalyzed enantioselective conjugated additions.
113. 1,4-Diiodo-1,3-dienes: versatile reagents in organic synthesis.
114. Coupling of N-tosylhydrazones with terminal alkynes catalyzed by copper(I): synthesis of trisubstituted allenes.
115. Brønsted acid catalyzed cyclization of hydroxylated enynes: a concise synthesis of five-membered heterocycles.
116. Stereoselective synthesis of 1,2,3,4-tetrasubstituted dienes from allenoates and aldehydes: an observation of phosphine-induced chemoselectivity.
117. Direct ruthenium-catalyzed C-C coupling of ethanol: diene hydro-hydroxyethylation to form all-carbon quaternary centers.
118. Formal total syntheses of (+)-prelaureatin and (+)-laurallene by diastereoselective brook rearrangement-mediated [3 + 4] annulation.
119. An anti-tetraamination of a 1,3-diene unit via cascade annulations of the azulenone scaffold with dicarbonyl azo-compounds.
120. Rhodium catalysed chemo- and stereoselective arylative and alkenylative cyclisation reactions of unsymmetric diynes containing a terminal alkyne moiety with organoboronic acids.
121. Rhodium(I)-catalyzed intramolecular carbonylative [2+2+1] cycloadditions and cycloisomerizations of bis(sulfonylallene)s.
122. Chemoenzymatic dynamic kinetic resolution of axially chiral allenes.
123. Asymmetric hydrovinylation of unactivated linear 1,3-dienes.
124. A versatile synthetic platform based on strained propargyl amines.
125. The enantioselective total synthesis of nemotin.
126. One-pot synthesis of 1,3-disubstituted allenes from 1-alkynes, aldehydes, and morpholine.
127. Enantioselective synthesis of substituted indanones from silyloxyallenes.
128. Tetrasubstituted allenes by Pd0-catalyzed three-component tandem Michael addition/cross-coupling reaction.
129. A simple and mild synthesis of 1H-isochromenes and (Z)-1-alkylidene-1,3-dihydroisobenzofurans by the iodocyclization of 2-(1-alkynyl)benzylic alcohols.
130. Silver(I)-mediated highly enantioselective synthesis of axially chiral allenes under thermal and microwave-assisted conditions.
131. Synthesis of fluorinated allenes via palladium-catalyzed monofluoromethylation using FBSM.
132. Regioselective allene synthesis and propargylations with propargyl diethanolamine boronates.
133. Synthesis of (E,Z)-1-alkoxy-3-acyloxy-2-methylpenta-1,3-dienes via Danishefsky-type dienes or O-acylation of enones.
134. On the impact of steric and electronic properties of ligands on gold(I)-catalyzed cycloaddition reactions.
135. (NHC)CuH-catalyzed entry to allenes via propargylic carbonate S(N)2'-reductions.
136. The synthesis of allenes by Cu(I)-catalyzed regio- and stereoselective reduction of propargylic carbonates with hydrosilanes.
137. Synthesis of 1-C-(tetra-O-acetyl-beta-d-galactopyranosyl)-2,3-diiodo-1-propene and its reaction with primary amines.
138. Stereoselective synthesis of trisubstituted (E,E)-1,3-dienes by the site-selective reductive cross-coupling of internal alkynes with terminal alkynes: a fragment coupling reaction for natural product synthesis.
139. Allene synthesis via C-C fragmentation: method and mechanistic insight.
140. Phosphane-catalyzed [3+2] annulation of allenoates with aldehydes: a simple and efficient synthesis of 2-alkylidenetetrahydrofurans.
141. Two-directional cross-metathesis.
142. Synthetic method for the preparation of 2-aminomethyl-1,3-diene derivatives through indium-mediated 1,3-butadien-2-ylation of imines.
143. Palladium-catalyzed cocyclotrimerization of allenes with arynes: selective synthesis of phenanthrenes.
144. Inter- and intramolecular [4 + 3] cycloadditions using epoxy enol silanes as functionalized oxyallyl cation precursors.
145. Enantioselective synthesis of allenamides via sulfimide [2,3]-sigmatropic rearrangement.
146. DABCO-catalyzed 1,4-bromolactonization of conjugated enynes: highly stereoselective formation of a stereogenic center and an axially chiral allene.
147. Selective one-pot synthesis of allenyl and alkynyl esters from beta-ketoesters.
148. Ruthenium-catalyzed synthesis of functionalized 1,3-dienes.
149. A cationic gold(I) complex as a general catalyst for the intermolecular hydroamination of alkynes: application to the one-pot synthesis of allenes from two alkynes and a sacrificial amine.
150. Regioselectivity control in the metal-catalyzed O-C functionalization of gamma-allenols, part 1: Experimental study.
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