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Modular chiral gold(i) phosphite complexes†Electronic supplementary information (ESI) available: Experimental results and NMR data. CCDC 933751 (L11(AuCl)), 933752 (L12(AuCl)a), 933753 (L9(AuCl)), 933754 (L10(AuCl)), 933756 (L8(AuCl)), 933757 (L12(AuCl)e). For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c3cy00250kClick here for additional data file.Click here for additional data file.

Delpont N, Escofet I, Pérez-Galán P, Spiegl D, Raducan M, Bour C, Sinisi R, Echavarren AM - Catal Sci Technol (2013)

Bottom Line: Chiral gold(i) phosphite complexes are readily prepared modularly from 3,3'-bis(triphenylsilyl)-1,1'-bi-2-naphthol.These chiral gold(i) phosphite complexes are very reactive precatalysts for the [4+2] cycloaddition of aryl-substituted 1,6-enynes with enantiomeric ratios ranging from 86 : 14 up to 94 : 6.

View Article: PubMed Central - PubMed

Affiliation: Institute of Chemical Research of Catalonia (ICIQ) , Av. Països Catalans 16 , 43007 Tarragona , Spain . Email: aechavarren@iciq.es.

ABSTRACT

Chiral gold(i) phosphite complexes are readily prepared modularly from 3,3'-bis(triphenylsilyl)-1,1'-bi-2-naphthol. These chiral gold(i) phosphite complexes are very reactive precatalysts for the [4+2] cycloaddition of aryl-substituted 1,6-enynes with enantiomeric ratios ranging from 86 : 14 up to 94 : 6.

No MeSH data available.


X-Ray crystal structures of ferrocenylphosphine gold complexes (a) L9(AuCl) and (b) L10(AuCl). ORTEP plot (50% thermal ellipsoids).
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fig3: X-Ray crystal structures of ferrocenylphosphine gold complexes (a) L9(AuCl) and (b) L10(AuCl). ORTEP plot (50% thermal ellipsoids).

Mentions: We initially examined the gold(i)-catalysed cyclization of enyne1a to form adduct 2a using a wide range of complexes as precatalysts (Fig. 1). The structures of complexes L8(AuCl) (Fig. 2), L9(AuCl), L10(AuCl) (Fig. 3), L11(AuCl) (Fig. 4), and L12(AuCl)a (Fig. 5) and L12(AuCl)e were determined using X-ray diffraction.


Modular chiral gold(i) phosphite complexes†Electronic supplementary information (ESI) available: Experimental results and NMR data. CCDC 933751 (L11(AuCl)), 933752 (L12(AuCl)a), 933753 (L9(AuCl)), 933754 (L10(AuCl)), 933756 (L8(AuCl)), 933757 (L12(AuCl)e). For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c3cy00250kClick here for additional data file.Click here for additional data file.

Delpont N, Escofet I, Pérez-Galán P, Spiegl D, Raducan M, Bour C, Sinisi R, Echavarren AM - Catal Sci Technol (2013)

X-Ray crystal structures of ferrocenylphosphine gold complexes (a) L9(AuCl) and (b) L10(AuCl). ORTEP plot (50% thermal ellipsoids).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4317972&req=5

fig3: X-Ray crystal structures of ferrocenylphosphine gold complexes (a) L9(AuCl) and (b) L10(AuCl). ORTEP plot (50% thermal ellipsoids).
Mentions: We initially examined the gold(i)-catalysed cyclization of enyne1a to form adduct 2a using a wide range of complexes as precatalysts (Fig. 1). The structures of complexes L8(AuCl) (Fig. 2), L9(AuCl), L10(AuCl) (Fig. 3), L11(AuCl) (Fig. 4), and L12(AuCl)a (Fig. 5) and L12(AuCl)e were determined using X-ray diffraction.

Bottom Line: Chiral gold(i) phosphite complexes are readily prepared modularly from 3,3'-bis(triphenylsilyl)-1,1'-bi-2-naphthol.These chiral gold(i) phosphite complexes are very reactive precatalysts for the [4+2] cycloaddition of aryl-substituted 1,6-enynes with enantiomeric ratios ranging from 86 : 14 up to 94 : 6.

View Article: PubMed Central - PubMed

Affiliation: Institute of Chemical Research of Catalonia (ICIQ) , Av. Països Catalans 16 , 43007 Tarragona , Spain . Email: aechavarren@iciq.es.

ABSTRACT

Chiral gold(i) phosphite complexes are readily prepared modularly from 3,3'-bis(triphenylsilyl)-1,1'-bi-2-naphthol. These chiral gold(i) phosphite complexes are very reactive precatalysts for the [4+2] cycloaddition of aryl-substituted 1,6-enynes with enantiomeric ratios ranging from 86 : 14 up to 94 : 6.

No MeSH data available.