Iron-catalysed tandem cross-dehydrogenative coupling (CDC) of terminal allylic C(sp3) to C(sp2) of styrene and benzoannulation in the synthesis of polysubstituted naphthalenes
Synthesis of α-methylstilbenes using an aqueous Wittig methodology and application toward the development of potent human aromatase inhibitors
作者:Alexander J. Nielsen、Sergio Raez-Villanueva、Denis J. Crankshaw、Alison C. Holloway、James McNulty
DOI:10.1016/j.bmcl.2019.03.033
日期:2019.6
styrenes. Application of the α-methylstilbenes toward the synthesis of a collection of stilbenoid-triazoles is reported and their inhibition of CYP450 19A1 (aromatase) investigated. The overall structure-activity profile provided additional evidence on the aryl halide-ketone bioisostere hypothesis and identified 6c as a potent inhibitor of aromatase in vitro (Ki = 8 nM).
The first transition metal-free highly stereoselective positional isomerization of various α-alkyl styrenes through a carbocation mechanism triggered strategy is developed by using Al(OTf)3 as a hidden Brønsted acid catalyst, which provides facile access to value-added acyclic tri- and tetra-substituted alkenes in good yields with high stereoselectivity under mild conditions. The practicality of this
Mechanically Induced Solid-State Generation of Phosphorus Ylides and the Solvent-Free Wittig Reaction
作者:Viktor P. Balema、Jerzy W. Wiench、Marek Pruski、Vitalij K. Pecharsky
DOI:10.1021/ja017908p
日期:2002.6.1
preparation of phosphorus ylides and the Wittigreactionoccurring in the solid sate during high-energy mechanochemical processing. Initial insights into the details of the discovered chemical transformations indicate that high-energy mechanical processing supports the interaction of reacting centers by breaking crystallinity of the reactants and by providing mass transfer without a solvent.