27. Chakraborty S, Bhattacharya P, Dai H, Guan H (2015) Nickel and Iron pincer complexes as
catalysts for the reduction of carbonyl compounds. Acc Chem Res 48(7):1995–2003. https://
doi.org/10.1021/acs.accounts.5b00055
28. Kumar A, Bhatti TM, Goldman AS (2017) Dehydrogenation of alkanes and aliphatic groups
by pincer-ligated metal complexes. Chem Rev 117(19):12357–12384. https://doi.org/10.1021/
acs.chemrev.7b00247
29. Noyori R, Yamakawa M, Hashiguchi S (2001) Metal-ligand bifunctional catalysis: a
nonclassical mechanism for asymmetric hydrogen transfer between alcohols and carbonyl
compounds. J Org Chem 66(24):7931–7944. https://doi.org/10.1021/jo010721w
30. Clapham SE, Hadzovic A, Morris RH (2004) Mechanisms of the H2-hydrogenation and
transfer hydrogenation of polar bonds catalyzed by ruthenium hydride complexes. Coord
Chem Rev 248(21–24):2201–2237. https://doi.org/10.1016/j.ccr.2004.04.007
31. Ikariya T, Murata K, Noyori R (2006) Bifunctional transition metal-based molecular catalysts
for asymmetric syntheses. Org Biomol Chem 4(3):393–406
32. Fryzuk MD, MacNeil PA (1983) Amides of rhodium and iridium stabilized as hybrid
multidentate ligands. Organometallics 2:355–356. https://doi.org/10.1021/om00074a030
33. Zhang J, Leitus G, Ben-David Y, Milstein D (2005) Facile conversion of alcohols into esters
and dihydrogen catalyzed by new ruthenium complexes. J Am Chem Soc 127
(31):10840–10841. https://doi.org/10.1021/ja052862b
34. Deeken S, Motz G, Kempe R (2007) How common are true aminopyridinato complexes? Z
Anorg Allg Chem 633(2):320–325. https://doi.org/10.1002/zaac.200600269
35. Gunanathan C, Gnanaprakasam B, Iron MA, Shimon LJW, Milstein D (2010) "Long-range"
metal-ligand cooperation in H 2 activation and ammonia-promoted hydride transfer with a
ruthenium acridine pincer complex. J Am Chem Soc 132(42):14763–14765. https://doi.org/
10.1021/ja107770y
36. Li H, Zheng B, Huang K-W (2015) A new class of PN3-pincer ligands for metal-ligand
cooperative catalysis. Coord Chem Rev 293-294:116–138. https://doi.org/10.1016/j.ccr.2014.
11.010
37. Goncalves TP, Huang K-W (2017) Metal-ligand cooperative reactivity in the (pseudo)dearomatized PNx(P) systems: the influence of the zwitterionic form in dearomatized pincer
complexes. J Am Chem Soc 139(38):13442–13449. https://doi.org/10.1021/jacs.7b06305
38. Mastalir M, Glatz M, Pittenauer E, Allmaier G, Kirchner K (2019) Rhenium-catalyzed
dehydrogenative coupling of alcohols and amines to afford nitrogen-containing aromatics
and more. Org Lett 21(4):1116–1120. https://doi.org/10.1021/acs.orglett.9b00034
39. Clarke ZE, Maragh PT, Dasgupta TP, Gusev DG, Lough AJ, Abdur-Rashid K (2006) A family
of active iridium catalysts for transfer hydrogenation of ketones. Organometallics 25
(17):4113–4117. https://doi.org/10.1021/om060049z
40. Vasudevan KV, Scott BL, Hanson SK (2012) Alkene hydrogenation catalyzed by nickel
hydride complexes of an aliphatic PNP pincer ligand. Eur J Inorg Chem 2012
(30):4898–4906. https://doi.org/10.1002/ejic.201200758
41. Schneider S, Meiners J, Askevold B (2012) Cooperative aliphatic PNP amido pincer ligands -
versatile building blocks for coordination chemistry and catalysis. Eur J Inorg Chem 2012
(3):412–429. https://doi.org/10.1002/ejic.201100880
42. Wang Z, Chen X, Liu B, Q-b L, Solan GA, Yang X, Sun W-H (2017) Cooperative interplay
between a flexible PNN-Ru(II) complex and a NaBH4 additive in the efficient catalytic
hydrogenation of esters. Cat Sci Technol 7(6):1297–1304. https://doi.org/10.1039/
C6CY02413K
43. Empsall HD, Hyde EM, Markham R, McDonald WS, Norton MC, Shaw BL, Weeks B (1977)
Synthesis and X-ray structure of an unusual iridium ylide or carbene complex. J Chem Soc
Chem Commun 17:589–590
44. Crocker C, Errington RJ, McDonald WS, Odell KJ, Shaw BL, Goodfellow RJ (1979) Rapid
reversible fission of a carbon-hydrogen bond in a metal complex: X-ray crystal structure of
Cooperative Reactivity by Pincer-Type Complexes Possessing Secondary. . .
129
catalysts for the reduction of carbonyl compounds. Acc Chem Res 48(7):1995–2003. https://
doi.org/10.1021/acs.accounts.5b00055
28. Kumar A, Bhatti TM, Goldman AS (2017) Dehydrogenation of alkanes and aliphatic groups
by pincer-ligated metal complexes. Chem Rev 117(19):12357–12384. https://doi.org/10.1021/
acs.chemrev.7b00247
29. Noyori R, Yamakawa M, Hashiguchi S (2001) Metal-ligand bifunctional catalysis: a
nonclassical mechanism for asymmetric hydrogen transfer between alcohols and carbonyl
compounds. J Org Chem 66(24):7931–7944. https://doi.org/10.1021/jo010721w
30. Clapham SE, Hadzovic A, Morris RH (2004) Mechanisms of the H2-hydrogenation and
transfer hydrogenation of polar bonds catalyzed by ruthenium hydride complexes. Coord
Chem Rev 248(21–24):2201–2237. https://doi.org/10.1016/j.ccr.2004.04.007
31. Ikariya T, Murata K, Noyori R (2006) Bifunctional transition metal-based molecular catalysts
for asymmetric syntheses. Org Biomol Chem 4(3):393–406
32. Fryzuk MD, MacNeil PA (1983) Amides of rhodium and iridium stabilized as hybrid
multidentate ligands. Organometallics 2:355–356. https://doi.org/10.1021/om00074a030
33. Zhang J, Leitus G, Ben-David Y, Milstein D (2005) Facile conversion of alcohols into esters
and dihydrogen catalyzed by new ruthenium complexes. J Am Chem Soc 127
(31):10840–10841. https://doi.org/10.1021/ja052862b
34. Deeken S, Motz G, Kempe R (2007) How common are true aminopyridinato complexes? Z
Anorg Allg Chem 633(2):320–325. https://doi.org/10.1002/zaac.200600269
35. Gunanathan C, Gnanaprakasam B, Iron MA, Shimon LJW, Milstein D (2010) "Long-range"
metal-ligand cooperation in H 2 activation and ammonia-promoted hydride transfer with a
ruthenium acridine pincer complex. J Am Chem Soc 132(42):14763–14765. https://doi.org/
10.1021/ja107770y
36. Li H, Zheng B, Huang K-W (2015) A new class of PN3-pincer ligands for metal-ligand
cooperative catalysis. Coord Chem Rev 293-294:116–138. https://doi.org/10.1016/j.ccr.2014.
11.010
37. Goncalves TP, Huang K-W (2017) Metal-ligand cooperative reactivity in the (pseudo)dearomatized PNx(P) systems: the influence of the zwitterionic form in dearomatized pincer
complexes. J Am Chem Soc 139(38):13442–13449. https://doi.org/10.1021/jacs.7b06305
38. Mastalir M, Glatz M, Pittenauer E, Allmaier G, Kirchner K (2019) Rhenium-catalyzed
dehydrogenative coupling of alcohols and amines to afford nitrogen-containing aromatics
and more. Org Lett 21(4):1116–1120. https://doi.org/10.1021/acs.orglett.9b00034
39. Clarke ZE, Maragh PT, Dasgupta TP, Gusev DG, Lough AJ, Abdur-Rashid K (2006) A family
of active iridium catalysts for transfer hydrogenation of ketones. Organometallics 25
(17):4113–4117. https://doi.org/10.1021/om060049z
40. Vasudevan KV, Scott BL, Hanson SK (2012) Alkene hydrogenation catalyzed by nickel
hydride complexes of an aliphatic PNP pincer ligand. Eur J Inorg Chem 2012
(30):4898–4906. https://doi.org/10.1002/ejic.201200758
41. Schneider S, Meiners J, Askevold B (2012) Cooperative aliphatic PNP amido pincer ligands -
versatile building blocks for coordination chemistry and catalysis. Eur J Inorg Chem 2012
(3):412–429. https://doi.org/10.1002/ejic.201100880
42. Wang Z, Chen X, Liu B, Q-b L, Solan GA, Yang X, Sun W-H (2017) Cooperative interplay
between a flexible PNN-Ru(II) complex and a NaBH4 additive in the efficient catalytic
hydrogenation of esters. Cat Sci Technol 7(6):1297–1304. https://doi.org/10.1039/
C6CY02413K
43. Empsall HD, Hyde EM, Markham R, McDonald WS, Norton MC, Shaw BL, Weeks B (1977)
Synthesis and X-ray structure of an unusual iridium ylide or carbene complex. J Chem Soc
Chem Commun 17:589–590
44. Crocker C, Errington RJ, McDonald WS, Odell KJ, Shaw BL, Goodfellow RJ (1979) Rapid
reversible fission of a carbon-hydrogen bond in a metal complex: X-ray crystal structure of
Cooperative Reactivity by Pincer-Type Complexes Possessing Secondary. . .
129