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For a revision on the use of pincer complexes in organic synthesis, see:. Singleton J.T. Tetrahedron 59 (2003) 1837
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For some examples related with the immobilization of pincer palladacycles onto heterogeneous and/or polymer support see:
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For some examples related with the immobilization of pincer palladacycles onto heterogeneous and/or polymer support see:. Bergbreiter D.E., Osburn P.L., and Frels J. J. Am. Chem. Soc. 123 (2001) 11105
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7
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The application of such NCN-palladacycles in cross-coupling reactions is described in:
-
The application of such NCN-palladacycles in cross-coupling reactions is described in:. Magill A.M., McGuines D.S., Cavell K.J., Britovsek G.J.P., Gibson V.C., White A.J.P., Williams D.J., and White A.M. J. Organomet. Chem. 617-618 (2001) 546
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25
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3142680907
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Although mechanistic studies suggest that metallic palladium(0) plays a significant role in the catalysis, the participation as catalyst of the pincer complexes is not completely excluded:
-
Although mechanistic studies suggest that metallic palladium(0) plays a significant role in the catalysis, the participation as catalyst of the pincer complexes is not completely excluded:. Eberhard M.R. Org. Lett. 6 (2004) 2125
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For a review about phosphine-based pincer complexes see:. van der Boom M.E., and Milstein D. Chem. Rev. 103 (2003) 1759
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38
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77953321002
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PCP palladium pincer complexes have been used in allylic alkylation:
-
PCP palladium pincer complexes have been used in allylic alkylation:. Wang Z., Eberhard M.R., Jensen C.M., Matsukawa S., and Yamamoto Y. J. Organomet. Chem. 681 (2003) 185
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Wang, Z.1
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Allylic stannylation:
-
Allylic stannylation:. Wallner O.A., and Szabó K. Org. Lett. 6 (2004) 1829
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Churruca, F.1
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Ogo S., Takebe Y., Uehara K., Yamazaki T., Nakai H., Watanabe Y., and Fukuzumi S.S. Organometallics 25 (2006) 331
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33749856004
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Other recent works regarding the synthesis and employment of PCP pincer ligands are described in:
-
Other recent works regarding the synthesis and employment of PCP pincer ligands are described in:. Kimura T., and Uozomi Y. Organometallics 25 (2006) 4883
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Kimura, T.1
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A revision about the catalytic applications of N-heterocyclic carbenes in:
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A revision about the catalytic applications of N-heterocyclic carbenes in:. Peris E., and Crabtree R.H. Coord. Chem. Rev. 248 (2004) 2239
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55
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-
0035928468
-
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The incorporation of aryl substituents in the imidazole rings does not improve the catalytic activity of this type of complexes in Heck reaction:
-
The incorporation of aryl substituents in the imidazole rings does not improve the catalytic activity of this type of complexes in Heck reaction:. Tulloch A.A.D., Danopoulos A.A., Tizzard G.J., Coles S.J., Hursthouse M.B., Hay-Motherwell R.S., and Motherwell W.B. Chem. Commun. (2001) 1270
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Tulloch, A.A.D.1
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0036570003
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For other unsymmetrical pincer complexes employed as catalysts in cross-coupling reactions see:
-
For other unsymmetrical pincer complexes employed as catalysts in cross-coupling reactions see:. Bravo J., Cativiela C., Navarro R., and Urriolabeitia E.P. J. Organomet. Chem. 650 (2002) 157
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68
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33644917984
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PCN pincer complexes have been used as catalysts in other reactions. See for example:
-
PCN pincer complexes have been used as catalysts in other reactions. See for example:. Motoyama Y., Shimozono K., and Nishiyama H. Inorg. Chim. Acta 359 (2006) 1725
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33644895033
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Inés B., SanMartín R., Churruca F., Domínguez E., Urtiaga M.K., and Arriortua M.I. Organometallics 27 (2008) 2833
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Inés, B.1
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73
-
-
77953321094
-
-
note
-
For more details about the synthesis and characterization of complex 12, included crystallographic data see Ref. [26].
-
-
-
-
75
-
-
28444476172
-
-
Although in his pioneering report Hiyama claimed the need of fluoride ions to facilitate the transmetallation step, later it has been demonstrated that this process can be similarly promoted by sodium hydroxide:
-
Although in his pioneering report Hiyama claimed the need of fluoride ions to facilitate the transmetallation step, later it has been demonstrated that this process can be similarly promoted by sodium hydroxide:. Handy C.J., Manoso A.S., McEroy W.T., Seganish W.M., and DeShong P. Tetrahedron 61 (2005) 12201
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Handy, C.J.1
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DeShong, P.5
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77
-
-
77953322055
-
-
note
-
The addition of fluoride ion or the use of organic solvents did not get better results. For more details see Ref. [26].
-
-
-
-
80
-
-
26844433863
-
-
Palladium catalyzed cross-coupling of α-haloenones with arylboronic acids have been scarcely studied. See for example:
-
Palladium catalyzed cross-coupling of α-haloenones with arylboronic acids have been scarcely studied. See for example:. Felpin F.-X. J. Org. Chem. 70 (2005) 8575
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J. Org. Chem.
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Felpin, F.-X.1
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Burns M.J., Fairlamb J.S., Kapdi A.R., Sehnal P., and Taylor R.J.K. Org. Lett. 9 (2007) 5397
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Burns, M.J.1
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84
-
-
77953321737
-
-
note
-
For the use of a NCN symmetric pincer in a Suzuki coupling with one benzyl derivative see Ref. [13].
-
-
-
-
85
-
-
38349128181
-
-
For a recent review on palladium-catalyzed functionalization of benzylic derivatives, see:
-
For a recent review on palladium-catalyzed functionalization of benzylic derivatives, see:. Liégault B., Renaud J.-L., and Bruneau C. Chem. Soc. Rev. 37 (2008) 290
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Liégault, B.1
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86
-
-
77953321248
-
-
note
-
All of our efforts to accomplishing the reaction in neat water were unsuccessful and in all cases the starting materials were recovered.
-
-
-
-
87
-
-
77953322431
-
-
note
-
A PCP palladium pincer has been used in a Suzuki coupling with bromoundecane as electrophilic partner. See Ref. [25].
-
-
-
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