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13244295338
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For overviews on the coordination chemistry of iminophosphorane-phosphine ligands see:
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37
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2442492251
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We note that the application of iminophosphorane-phosphine ligands in the palladium catalyzed cross coupling of secondary amines with aryl halides has also been briefly commented on:
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80
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0029291529
-
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2, has been extensively studied by R. G. Cavell and co-workers, the coordination of the nitrile function never being observed. See for example: (a)
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M. Hanack K. Dürr A. Lange J. O. Barcina J. Pohmer E. Witke Synth. Met. 1995 71 2275
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86
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26644473646
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and references cited therein
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R. L. Cordiner D. Albesa-Jové R. L. Roberts J. D. Farmer H. Puschmann D. Corcoran A. E. Goeta J. A. K. Howard P. J. Low J. Organomet. Chem. 2005 690 4908
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87
-
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33748302623
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-
6-p-cymene > Cl > P > N
-
6-p-cymene > Cl > P > N
-
-
-
-
88
-
-
33748301821
-
-
4 units
-
4 units
-
-
-
-
89
-
-
33748317691
-
-
Note that, although the spatial disposition of the substituents remains unchanged, the preference orders for the phosphorus atom change after imination inverting the R/S assignment
-
Note that, although the spatial disposition of the substituents remains unchanged, the preference orders for the phosphorus atom change after imination inverting the R/S assignment
-
-
-
-
90
-
-
33748286573
-
-
3 requires a considerably longer reaction time (7 days) when compared to the highly activated 4-azido-2,3,5,6-tetrafluorobenzonitrile (8 h). Attempts to accelerate this reaction working under refluxing conditions resulted in the formation of a non-separable mixture containing 9a and the oxidized complex 12 (see Scheme 4)
-
3 requires a considerably longer reaction time (7 days) when compared to the highly activated 4-azido-2,3,5,6-tetrafluorobenzonitrile (8 h). Attempts to accelerate this reaction working under refluxing conditions resulted in the formation of a non-separable mixture containing 9a and the oxidized complex 12 (see Scheme 4)
-
-
-
-
91
-
-
33748319210
-
-
note
-
PP = 31.5 Hz, PhP)) were obtained in all cases
-
-
-
-
93
-
-
33645980376
-
-
Recent advances in enantioselective Diels-Alder reactions catalyzed by chiral transition-metal complexes are summarized in:
-
J. W. Faller J. Parr Curr. Org. Chem. 2006 10 151
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Faller, J.W.1
Parr, J.2
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95
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33645867975
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D. Carmona C. Vega N. García F. J. Lahoz S. Elipe L. A. Oro M. P. Lamata F. Viguri R. Borao Organometallics 2006 25 1592
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Carmona, D.1
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Elipe, S.5
Oro, L.A.6
Lamata, M.P.7
Viguri, F.8
Borao, R.9
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107
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-
33748289303
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-
6 (1 equivalent per ruthenium)
-
6 (1 equivalent per ruthenium)
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