1361250-52-3Relevant academic research and scientific papers
Transition-metal-catalyzed synthesis of aspergillide B: An alkyne addition strategy
Trost, Barry M.,Bartlett, Mark J.
, p. 1322 - 1325 (2012/04/23)
A catalytic enantioselective formal total synthesis of aspergillide B is reported. This linchpin synthesis was enabled by the development of new conditions for Zn-ProPhenol catalyzed asymmetric alkyne addition. This reaction was used in conjunction with ruthenium-catalyzed trans-hydrosilylation to affect the rapid construction of a late-stage synthetic intermediate of aspergillide B to complete a formal synthesis of aspergillide B in a highly efficient manner.
Development of Zn-prophenol-catalyzed asymmetric alkyne addition: Synthesis of chiral propargylic alcohols
Trost, Barry M.,Bartlett, Mark J.,Weiss, Andrew H.,Vonwangelin, Axel Jacobi,Chan, Vincent S.
supporting information, p. 16498 - 16509 (2013/02/23)
The development of a general and practical zinc-catalyzed enantioselective alkyne addition methodology is reported. The commercially available ProPhenol ligand (1) has facilitated the addition of a wide range of zinc alkynylides to aryl, aliphatic, and α,β-unsaturated aldehydes in high yield and enantioselectivity. New insights into the mechanism of this reaction have resulted in a significant reduction in reagent stoichiometry, enabling the use of precious alkynes and avoiding the use of excess dimethylzinc. The enantioenriched propargylic alcohols from this reaction serve as versatile synthetic intermediates and have enabled efficient syntheses of several complex natural products. A precious few: A general and practical zinc-catalyzed enantioselective alkyne addition methodology is reported (see scheme). New insights into the mechanism of this reaction have resulted in a significant reduction in reagent stoichiometry, enabling the use of precious alkynes and avoiding the use of excess dimethylzinc. This methodology has enabled the efficient synthesis of several complex natural products.
