TY - JOUR
T1 - High yields of piperylene in the transfer dehydrogenation of pentane catalyzed by pincer-ligated iridium complexes
AU - Kumar, Akshai
AU - Hackenberg, Jason D.
AU - Zhuo, Gao
AU - Steffens, Andrew M.
AU - Mironov, Oleg
AU - Saxton, Robert J.
AU - Goldman, Alan S.
N1 - Funding Information:
This work was supported by NSF under the CCI Center for Enabling New Technologies through Catalysis (CENTC) Phase II Renewal, CHE-1205189, and by Chevron Energy Technology Company.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Conjugated dienes are desirable reagents for several important applications. We report that sterically uncrowded PCP-pincer iridium complexes, including precursors of (iPr4PCP)Ir and (Me2tBu2PCP)Ir, catalyze the transfer dehydrogenation of pentane, using high concentrations of t‐butylethylene (TBE) as hydrogen acceptor, to give high yields of 1,3-pentadiene (piperylene). Piperylene yields are ca. 100-fold greater than those obtained with the more widely used di(t‐butyl)phosphino substituted pincer iridium catalysts. This represents, to our knowledge, the first reported high-yield synthesis of dienes via the dehydrogenation of n-alkane using molecular catalysts. To our knowledge, this is the first reported high-yield synthesis of dienes achieved via the dehydrogenation of n-alkane using molecular catalysts.
AB - Conjugated dienes are desirable reagents for several important applications. We report that sterically uncrowded PCP-pincer iridium complexes, including precursors of (iPr4PCP)Ir and (Me2tBu2PCP)Ir, catalyze the transfer dehydrogenation of pentane, using high concentrations of t‐butylethylene (TBE) as hydrogen acceptor, to give high yields of 1,3-pentadiene (piperylene). Piperylene yields are ca. 100-fold greater than those obtained with the more widely used di(t‐butyl)phosphino substituted pincer iridium catalysts. This represents, to our knowledge, the first reported high-yield synthesis of dienes via the dehydrogenation of n-alkane using molecular catalysts. To our knowledge, this is the first reported high-yield synthesis of dienes achieved via the dehydrogenation of n-alkane using molecular catalysts.
KW - Alkane dehydrogenation
KW - C[sbnd]H bond activation
KW - Catalytic alkane conversion
KW - Dienes
KW - Pincer-Iridium complexes
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U2 - 10.1016/j.molcata.2016.10.019
DO - 10.1016/j.molcata.2016.10.019
M3 - Article
AN - SCOPUS:85003520628
VL - 426
SP - 368
EP - 375
JO - Journal of Molecular Catalysis A: Chemical
JF - Journal of Molecular Catalysis A: Chemical
SN - 1381-1169
ER -