Zobrazeno 1 - 10
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pro vyhledávání: '"Sugam, Kharel"'
Publikováno v:
Inorganica Chimica Acta. 490:215-219
Three new hydrogen bonding motifs of phosphine oxides involving a silanol, a phenol, and chloroform are described. The single crystal X-ray structures, in combination with the NMR and IR data of the new adducts Ph3PO∙HOSiPh2OSiPh2OH·OPPh3, which f
Autor:
John A. Gladysz, Nattamai Bhuvanesh, Joseph H. Reibenspies, Michael B. Hall, Andreas Ehnbom, Hemant Joshi, Michael Stollenz, Tobias Fiedler, Sugam Kharel
Publikováno v:
Polyhedron. 158:325-333
The reaction of (O )PH((CH2)6CH CH2)2 (2.0 equiv) and PtCl2 in toluene gives trans-PtCl2(P(OH)((CH2)6CH CH2)2)2 in 68% yield as a 82:18 mixture of Pt–Cl⋯H–OP hydrogen bond isomers. Addition of Grubbs’ first generation catalyst followed by hyd
Publikováno v:
Journal of Organometallic Chemistry. 875:80-87
The reaction of selenium with NaBH4 and Br(CH2)6CH=CH2 (2.0 equiv each) gives the dialkyl selenide Se((CH2)6CH=CH2)2 (91% after workup) which is combined with PtCl2 (0.5 equiv, toluene) to give trans-PtCl2(Se((CH2)6CH=CH2)2)2 (10, 85%). The reaction
Publikováno v:
Organometallics. 37:2991-3000
Reactions of P((CH2)mCH═CH2)3 (2.0 equiv; m = 9 (f), 10 (g), 14 (k)) and PtCl2 in toluene give trans-PtCl2(P((CH2)mCH═CH2)3)2 (trans-1f,g,k; 63–49%). Reactions of trans-1f,g with Grubbs first generation catalyst (CH2Cl2/reflux) followed by hydr
Autor:
John A. Gladysz, Nattamai Bhuvanesh, Joseph H. Reibenspies, Janet Blümel, Tiezheng Jia, Sugam Kharel
Publikováno v:
Chemistry – An Asian Journal. 13:2632-2640
Reactions of (O=)PH(OCH2 CH3 )2 and BrMg(CH2 )m CH=CH2 (4.9-3.2 equiv; m=4 (a), 5 (b), 6 (c)) give the dialkylphosphine oxides (O=)PH[(CH2 )m CH=CH2 ]2 (2 a-c; 77-81 % after workup), which are treated with NaH and then α,ω-dibromides Br(CH2 )n Br (
Autor:
Katrin Skopek, Tobias Fiedler, Gisela D. Hess, Frank Hampel, Andreas Ehnbom, Nattamai Bhuvanesh, John A. Gladysz, Sugam Kharel, Hemant Joshi
Publikováno v:
Journal of the American Chemical Society. 140:8463-8478
Reactions of cis-PtCl2(P((CH2)mCH═CH2)3)2 and Grubbs’ first generation catalyst and then hydrogenations afford cis-PtCl2(P((CH2)n)3P) (cis-2; n = 2m + 2 = 12 (b), 14 (c), 16 (d), 18 (e), 20 (f), 22 (g); 6–40%), derived from 3-fold interligand m
Autor:
Hemant Joshi, Michael Stollenz, Deeb Taher, Nattamai Bhuvanesh, Stephen Bierschenk, John A. Gladysz, Sugam Kharel
Publikováno v:
Journal of the American Chemical Society. 139:2172-2175
The dibridgehead diphosphine ((CH2)14)3P (1) can rapidly turn inside-out (homeomorphic isomerization) to give a mixture of in,in and out,out isomers. The exo directed lone pairs in the latter are able to scavenge Lewis acidic MCl2; cagelike adducts o
Autor:
Hemant, Joshi, Sugam, Kharel, Andreas, Ehnbom, Katrin, Skopek, Gisela D, Hess, Tobias, Fiedler, Frank, Hampel, Nattamai, Bhuvanesh, John A, Gladysz
Publikováno v:
Journal of the American Chemical Society. 140(27)
Reactions of cis-PtCl
Autor:
Sugam, Kharel, Hemant, Joshi, Stephen, Bierschenk, Michael, Stollenz, Deeb, Taher, Nattamai, Bhuvanesh, John A, Gladysz
Publikováno v:
Journal of the American Chemical Society. 139(6)
The dibridgehead diphosphine ((CH
Autor:
Nattamai Bhuvanesh, Sugam Kharel, John A. Gladysz, Janet Blümel, Casie R. Hilliard, Kyle J. Cluff
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 20(52)
Solid-state NMR spectroscopy of selected phos-phine oxides adsorbed on silica surfaces establishes thesurface mobilities, even of phosphine oxides with highmelting points. Crystal structures of the adductsPh 3 PO·HOSiPh 3 and Cy 3 PO·H 2 O indicate