199275-59-7Relevant academic research and scientific papers
Photoredox propargylation of aldehydes catalytic in titanium
Calogero, Francesco,Gualandi, Andrea,Di Matteo, Marco,Potenti, Simone,Fermi, Andrea,Bergamini, Giacomo,Cozzi, Pier Giorgio
, p. 7002 - 7009 (2021)
A practical and effective photoredox propargylation of aldehydes promoted by 10 mol % of [Cp2TiCl2] is presented. No stoichiometric metals or scavengers are used for the process. A catalytic amount of the cheap and simply prepared or
Acid-catalyzed synthesis of α,β-disubstituted conjugated enones by a Meyer-Schuster-type rearrangement in allenols
Alcaide, Benito,Almendros, Pedro,Cembellín, Sara,Martínez Del Campo, Teresa
supporting information, p. 1070 - 1078 (2015/03/30)
A novel, direct and simple methodology to gain access to α,β-disubstituted conjugated enones from α-allenols in a sustainable metal catalysis context, considering the inexpensiveness and environmentally friendliness of iron(III) species and protons, has b
Direct allenol-based stereocontrolled access to substituted (E)-1,3-enynes
Alcaide, Benito,Almendros, Pedro,Martínez Del Campo, Teresa
, p. 7603 - 7609 (2012/10/29)
A stereoselective synthesis of 1-substituted (E)-2-aryl-but-1-en-3-ynes, including tetrasubstituted alkenes, has been developed from aryl-substituted α-allenols by treatment with the AcCl-NaOH (aqueous) system. This transformation might be explained throu
Rhodium(l)-catalyzed carbonyl allenylation versus propargylation via redox transmetalation across tetragonal tin(ll) oxide
Banerjee, Moloy,Roy, Sujit
, p. 2137 - 2140 (2007/10/03)
A reagent combination of β-SnO and catalytic [Rh(COD)Cl]2 in THF-H2O promotes the reaction of propargyl bromides and aldehydes and directs the regioselectivity toward the formation of either allenic alcohols or homopropargylic alcohols. This highly regioselective either/or transformation proceeds via a transmetalation from rhodium to tin, in which metallotropic rearrangement between a propargylmetal and allenylmetal is arrested.
Carbonyl allenylations and propargylations by 3-chloro-1-propyne or 2-propynyl mesylates with tin(IV) chloride and tetrabutylammonium iodide
Masuyama, Yoshiro,Watabe, Akiko,Kurusu, Yasuhiko
, p. 1713 - 1715 (2007/10/03)
By the use of tin(IV) chloride and tetrabutylammonium iodide in dichloromethane, 3-chloro-1-propyne or 2-propynyl mesylate can be applied to allenylation and propargylation of aldehydes (carbonyl allenylation and propargylation) to produce a mixture of 1-
