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Synthesis and characterization of new (N-diphenylphosphino)-isopropylanilines and their complexes: crystal structure of (Ph2P = S)NH-C6H4-4-CH(CH3)(2) and catalytic activity of palladium(II) complexes in the Heck and Suzuki cross-coupling reactions
Date
2010-01-01
Author
AYDEMİR, MURAT
BAYSAL, AKIN
GÜRBÜZ, NEVİN
ÖZDEMİR, İSMAİL
Gumgum, Bahattin
Özkar, Saim
Caylak, Nagihan
Yildirim, Leyla Tatar
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Three new (N-diphenylphosphino)-isopropylanilines, having isopropyl substituent at the carbon 2- (1) 4- (2) or 2,6- (3) were prepared from the aminolysis of chlorodiphenylphosphine with 2-isopropylaniline,4-isopropylaniline or 2,6-diisopropylaniline, respectively, under anaerobic conditions. Oxidation of 1,2 and 3 with aqueous hydrogen peroxide, elemental sulfur or gray selenium gave the corresponding oxides, sulfides and selenides (Ph2P=E)NH-C6H4-2-CH(CH3)(2), (Ph2P=E)NH-C6H4-4-CH(CH3)(2) and (Ph2P=E)NH-C6H4-2,6-[CH(CH3)(2)](2), where E = O, S, or Se, respectively. The reaction of [M(cod)Cl-2] (M = Pd, Pt; cod = 1,5-cyclooctadiene) with two equivalents of 1,2 or 3 yields the corresponding monodendate complexes [M((Ph2P)NH-C6H4-2-CH(CH3)(2))(2)Cl-2], M = Pd 1d, M = Pt 1e, [M((Ph2P)NH-C6H4-4-CH(CH3)(2))(2)Cl-2], M = Pd 2d, M = Pt 2e and [M((Ph2P)NH-C6H4-2,6-(CH(CH3)(2))(2))(2)Cl-2], M = Pd 3d, M = Pt 3e, respectively. All the compounds were isolated as analytically pure substances and characterized by NMR, IR spectroscopy and elemental analysis. Furthermore, representative solid-state structure of [(Ph2P=S)NH-C6H4-4-CH(CH3)(2)] (2b) was determined using single crystal X-ray diffraction technique. The complexes 1d-3d were tested and found to be highly active catalysts in the Suzuki coupling and Heck reaction, affording biphenyls and stilbenes, respectively. Copyright (C) 2009 John Wiley & Sons, Ltd.
Subject Keywords
Inorganic Chemistry
,
General Chemistry
URI
https://hdl.handle.net/11511/44680
Journal
APPLIED ORGANOMETALLIC CHEMISTRY
DOI
https://doi.org/10.1002/aoc.1576
Collections
Department of Chemistry, Article
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M. AYDEMİR et al., “Synthesis and characterization of new (N-diphenylphosphino)-isopropylanilines and their complexes: crystal structure of (Ph2P = S)NH-C6H4-4-CH(CH3)(2) and catalytic activity of palladium(II) complexes in the Heck and Suzuki cross-coupling reactions,”
APPLIED ORGANOMETALLIC CHEMISTRY
, vol. 24, no. 1, pp. 17–24, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/44680.