Balancing bulkiness in gold(I) phosphino-triazole catalysis
Research output: Contribution to journal › Article › peer-review
Standard
Balancing bulkiness in gold(I) phosphino-triazole catalysis. / Zhao, Yiming; Wakeling, Mat; Meloni, Fernanda; Sum, TJ; Nguyen, Van Huy; Buckley, Benjamin R; Davies, Paul; Fossey, John.
In: European Journal of Organic Chemistry, Vol. 2019, No. 31-32, 01.09.2019, p. 5540-5548.Research output: Contribution to journal › Article › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Balancing bulkiness in gold(I) phosphino-triazole catalysis
AU - Zhao, Yiming
AU - Wakeling, Mat
AU - Meloni, Fernanda
AU - Sum, TJ
AU - Nguyen, Van Huy
AU - Buckley, Benjamin R
AU - Davies, Paul
AU - Fossey, John
PY - 2019/9/1
Y1 - 2019/9/1
N2 - The syntheses of a series of 1-phenyl-5-phosphino1,2,3-triazoles are disclosed, within which, the phosphorus atom(at the 5-position of a triazole) is appended by one, two or three triazole motifs, and the valency of the phosphorus(III) atom is completed by two, one or zero ancillary (phenyl or cyclohexyl) groups respectively. This series of phosphines was compared with tricyclohexylphosphine and triphenylphosphine to study the effect of increasing the number of triazoles appended to the central phosphorus atom from zero to three triazoles. Gold(I) chloride complexes of the synthesised ligands were prepared and analysed by techniques including single-crystal X-ray diffraction structure determination. Gold(I) complexes were also prepared from 1-(2,6-dimethoxy)-phenyl-5-dicyclohexyl-phos-phino 1,2,3-triazole and 1-(2,6-dimethoxy)-phenyl-5-diphenyl-phosphino 1,2,3-triazole ligands. The crystal structures thus obtained were examined using the SambVca (2.0)web tool and percentage buried volumes determined. The effectiveness of these gold(I) chloride complexes to serve as precatalysts for alkyne hydration were assessed. Furthermore, the regioselectivity of hydration of but-1-yne-1,4-diyldibenzene was probed.
AB - The syntheses of a series of 1-phenyl-5-phosphino1,2,3-triazoles are disclosed, within which, the phosphorus atom(at the 5-position of a triazole) is appended by one, two or three triazole motifs, and the valency of the phosphorus(III) atom is completed by two, one or zero ancillary (phenyl or cyclohexyl) groups respectively. This series of phosphines was compared with tricyclohexylphosphine and triphenylphosphine to study the effect of increasing the number of triazoles appended to the central phosphorus atom from zero to three triazoles. Gold(I) chloride complexes of the synthesised ligands were prepared and analysed by techniques including single-crystal X-ray diffraction structure determination. Gold(I) complexes were also prepared from 1-(2,6-dimethoxy)-phenyl-5-dicyclohexyl-phos-phino 1,2,3-triazole and 1-(2,6-dimethoxy)-phenyl-5-diphenyl-phosphino 1,2,3-triazole ligands. The crystal structures thus obtained were examined using the SambVca (2.0)web tool and percentage buried volumes determined. The effectiveness of these gold(I) chloride complexes to serve as precatalysts for alkyne hydration were assessed. Furthermore, the regioselectivity of hydration of but-1-yne-1,4-diyldibenzene was probed.
KW - Click chemistry
KW - Gold
KW - Homogeneous catalysis
KW - Phosphane ligands
KW - Triazoles
UR - http://www.scopus.com/inward/record.url?scp=85070063894&partnerID=8YFLogxK
U2 - 10.1002/ejoc.201900850
DO - 10.1002/ejoc.201900850
M3 - Article
C2 - 31598094
VL - 2019
SP - 5540
EP - 5548
JO - European Journal of Organic Chemistry
JF - European Journal of Organic Chemistry
SN - 1434-193X
IS - 31-32
ER -