1079049-45-8Relevant articles and documents
Well-Defined Chiral Gold(III) Complex Catalyzed Direct Enantioconvergent Kinetic Resolution of 1,5-Enynes
Bohan, Patrick T.,Dean Toste
, p. 11016 - 11019 (2017)
The development of a gold(III) catalyzed direct enantioconvergent 1,5-enyne cycloisomerization and kinetic resolution reaction is described. The transformation results in highly enantioenriched bicyclo[3.1.0]hexenes at all levels of conversion, with no racemization or symmetrization taking place during the course of the reaction, and simultaneously affords optically enriched 1,5-enynes. This report marks the first highly enantioselective transformation catalyzed by a well-defined cationic gold(III) catalyst and demonstrates the unique potential of gold(III) complexes in enantioselective catalysis.
HBF4-Catalysed Nucleophilic Substitutions of Propargylic Alcohols
Barreiro, Elena,Sanz-Vidal, Alvaro,Tan, Eric,Lau, Shing-Hing,Sheppard, Tom D.,Dez-Gonzlez, Silvia
supporting information, p. 7544 - 7549 (2016/01/26)
The activity of HBF4 (aqueous solution) as a catalyst in propargylation reactions is presented. Diverse types of nucleophiles were employed in order to form new C-O, C-N and C-C bonds in technical acetone and in air. Good to excellent yields and good chemoselectivities were obtained using low acid loading (typically 1 mol-%) under simple reaction conditions. The activity of HBF4 (aq. solution) as a catalyst in propargylation reactions is presented. C-O, C-N and C-C bonds were formed in technical acetone and in air. Good to excellent yields were obtained using low acid loading (typically 1 mol-%) under mild reaction conditions.
Zinc-mediated allylation of aryl 2-propynyl acetates: A facile synthesis of 1,5-enynes
Yadav,Subba Reddy,Chandrakanth,Prashant
scheme or table, p. 954 - 955 (2009/04/05)
Aryl 2-propynyl acetates undergo smooth allylation with allylzinc bromide (generated in situ from allyl bromide and zinc metal) in THF at room temperature under mild conditions to furnish the corresponding 1,5-enynes in good to excellent yields and with high selectivity. Indium metal is also found to accomplish the nucleophilic substitution of aryl 2-propynylic acetates with allyl bromide. Copyright