Teitl: Contrasting frustrated Lewis pair reactivity with selenium- and boron-based Lewis acids

Dyfyniad
Wilkins LC, Gunther BAR, Walther M, et al. (2017). Contrasting frustrated Lewis pair reactivity with selenium- and boron-based Lewis acids. Cardiff University. https://doi.org/10.17035/d.2017.0011648620

Manylion y Set Ddata

Cyhoeddwr: Cardiff University

Dyddiad (y flwyddyn) pryd y daeth y data ar gael i'r cyhoedd: 2017

Dyddiad dechrau creu'r data: 01.01.2015

Dyddiad gorffen creu'r data: 18.12.2016

Fformat y data: .cif, .pdf

Meddalwedd ofynnol: NMR data visualization software e.g. MNOVA
X-ray structure visualization software e.g. Mercury

Amcangyfrif o gyfanswm maint storio'r set ddata: Llai na 100 megabeit

DOI : 10.17035/d.2017.0011648620

DOI URL: http://doi.org/10.17035/d.2017.0011648620

Disgrifiad

The activation of π-bonds in diynyl esters has been investigated by using soft and hard Lewis acids. In the case of the soft selenium Lewis acid PhSeCl, sequential activation of the alkyne bonds leads initially to an isocoumarin (1 equiv PhSeCl) and then to a tetracyclic conjugated structure with the isocoumarin subunit fused to a benzoselenopyran (3 equiv PhSeCl). Conversely, the reaction with the hard Lewis acidic borane B(C6F5)3 initiates a cascade reaction to yield a complex π-conjugated system containing phthalide and indene subunits. The experimental procedures, NMR data and X-ray data can be found here.

Results based upon these data are published at http://doi.org/10.1002/anie.201605239