about
A novel use of Grubbs' carbene. Application to the catalytic deprotection of tertiary allylaminesBeta-lactams: versatile building blocks for the stereoselective synthesis of non-beta-lactam products.Gold-catalyzed cyclizations of alkynol-based compounds: synthesis of natural products and derivatives.Gold-catalyzed heterocyclizations in alkynyl- and allenyl-β-lactams.Gold-catalyzed oxycyclization of allenic carbamates: expeditious synthesis of 1,3-oxazin-2-ones.Rhodium-catalyzed synthesis of 3-hydroxy-beta-lactams via oxonium ylide generation: three-component reaction between azetidine-2,3-diones, ethyl diazoacetate, and alcohols.Lewis acid-assisted ene cyclization of 2-azetidinone-tethered enals: synthesis of enantiopure carbacepham derivatives.Rapid and stereocontrolled synthesis of racemic and optically pure highly functionalized pyrrolizidine systems via rearrangement of 1,3-dipolar cycloadducts derived from 2-azetidinone-tethered azomethine ylides.Metal-promoted allylation, propargylation, or allenylation of azetidine-2,3-diones in aqueous and anhydrous media. Application to the asymmetric synthesis of densely functionalized 3-substituted 3-hydroxy-beta-lactams.Metal-mediated carbonyl-1,3-butadien-2-ylation by 1,4-bis(methanesulfonyl)-2-butyne or 1,4-dibromo-2-butyne in aqueous media: asymmetric synthesis of 3-substituted 3-hydroxy-beta-lactams.Additions of allenyl/propargyl organometallic reagents to 4-oxoazetidine-2-carbaldehydes: novel palladium-catalyzed domino reactions in allenynes.Efficient entry to highly functionalized beta-lactams by regio- and stereoselective 1,3-dipolar cycloaddition reaction of 2-azetidinone-tethered nitrones. Synthetic applications.Asymmetric synthesis of unusual fused tricyclic beta-lactam structures via aza-cycloadditions/ring closing metathesis.Useful dual Diels-Alder behavior of 2-azetidinone-tethered aryl imines as azadienophiles or azadienes: a beta-lactam-based stereocontrolled access to optically pure highly functionalized indolizidine systems.Straightforward asymmetric entry to highly functionalized 3-substituted 3-hydroxy-beta-lactams via Baylis-Hillman or bromoallylation reactions.Synthesis of optically pure highly functionalized gamma-lactams via 2-azetidinone-tethered iminophosphoranes.Iodine recycling via 1,3-migration in iodoindoles under metal catalysis.Controlled heterocyclization/cross-coupling domino reaction of β,γ-allendiols and α-allenic esters: method and mechanistic insight for the preparation of functionalized buta-1,3-dienyl dihydropyrans.Metal-catalyzed cyclization of beta- and gamma-allenols derived from D-glyceraldehyde--synthesis of enantiopure dihydropyrans and tetrahydrooxepines: an experimental and theoretical study.Synthesis of spiroheterocycles by palladium-catalyzed domino cycloisomerization/cross-coupling of alpha-allenols and Baylis-Hillman acetates.Regioselectivity control in the metal-catalyzed functionalization of gamma-allenols, part 2: Theoretical study.Regioselectivity control in the metal-catalyzed O-C functionalization of gamma-allenols, part 1: Experimental study.De Novo Synthesis of α-Hydroxy Ketones by Gallic Acid-Promoted Aerobic Coupling of Terminal Alkynes with Diazonium Salts.Novel carbonyl bromoallylation/Heck reaction sequence. Stereocontrolled access to bicyclic beta-lactams.Photoinduced Gold-Catalyzed Domino C(sp) Arylation/Oxyarylation of TMS-Terminated Alkynols with Arenediazonium Salts.Metal-mediated entry to functionalized 3-substituted 3-hydroxyindolin-2-ones via regiocontrolled carbonylallylation, bromoallylation, 1,3-butadien-2-ylation, propargylation, or allenylation reactions of isatins in aqueous media.Carbocyclization versus oxycyclization on the metal-catalyzed reactions of oxyallenyl C3-linked indoles.Organocatalytic reactions with acetaldehyde.Pd(II)-catalyzed domino heterocyclization/cross-coupling of alpha-allenols and alpha-allenic esters: efficient preparation of functionalized buta-1,3-dienyl dihydrofurans.Stereoselective NaN3-catalyzed halonitroaldol-type reaction of azetidine-2,3-diones in aqueous media.Heterocyclization of allenes catalyzed by late transition metals: mechanisms and regioselectivity.Diastereoselectivity enhancement in the 1,3-cycloaddition of beta-lactam aldehydes. Application to the synthesis of enantiopure indolizidinone amino esters.I2-Catalyzed enantioselective ring expansion of beta-lactams to gamma-lactams through a novel C3-C4 bond cleavage. Direct entry to protected 3,4-dihydroxypyrrolidin-2-one derivatives.Synthesis of novel enantiopure 4-hydroxypipecolic acid derivatives with a bicyclic beta-lactam structure from a common 3-azido-4-oxoazetidine-2-carbaldehyde precursor.Synthesis of strained tricyclic beta-lactams by intramolecular [2+2] cycloaddition reactions of 2-azetidinone-tethered enallenols: control of regioselectivity by selective alkene substitution.A practical ruthenium-catalyzed cleavage of the allyl protecting group in amides, lactams, imides, and congeners.Direct organocatalytic synthesis of enantiopure succinimides from beta-lactam aldehydes through ring expansion promoted by azolium salt precatalysts.New regiocontrolled synthesis of functionalized pyrroles from 2-azetidinone-tethered allenols.Efficient entry to diversely functionalized spirocyclic oxindoles from isatins through carbonyl-addition/cyclization reaction sequences.Gold-Catalyzed Divergent Ring-Closing Modes of Indole-Tethered Amino Allenynes.
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description
hulumtues
@sq
researcher
@en
wetenschapper
@nl
հետազոտող
@hy
name
Pedro Almendros
@ast
Pedro Almendros
@en
Pedro Almendros
@es
Pedro Almendros
@nl
Pedro Almendros
@sl
type
label
Pedro Almendros
@ast
Pedro Almendros
@en
Pedro Almendros
@es
Pedro Almendros
@nl
Pedro Almendros
@sl
prefLabel
Pedro Almendros
@ast
Pedro Almendros
@en
Pedro Almendros
@es
Pedro Almendros
@nl
Pedro Almendros
@sl
P1053
G-4293-2015
P106
P1153
7004240147
P21
P31
P3829
P496
0000-0001-6564-2758