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NHC‐Pd complex based on 1,3‐bis (4‐ethoxycarbonylphenyl) imidazolium chloride: synthesis, structure and catalytic activity in the synthesis of axially chiral benzophenone hydrazone
Author(s) -
Duan Wenzeng,
Sun Zhaofeng,
Huo Yanmin,
Liu Yanke,
Wu Guangqing,
Wang Ruifeng,
Wu Shuang,
Yao Qingxia,
Gong Shuwen
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.4444
Subject(s) - benzophenone , hydrazone , chemistry , catalysis , phosphine , chloride , proton nmr , axial symmetry , crystal structure , medicinal chemistry , stereochemistry , polymer chemistry , crystallography , organic chemistry , structural engineering , engineering
A novel NHC–Pd complex of 1,3‐bis (4‐ethoxycarbonylphenyl) imidazolium chloride has been synthesized and characterized by 1 H NMR, 13 C NMR, IR and X‐ray single‐crystal diffraction studies. TG analysis shows that the NHC‐Pd complex is stable under 208 °C. The catalytic activities have been explored for the synthesis of axially chiral N‐(2′‐methoxy‐1,1′‐binaphthalen‐2‐yl) benzophenone hydrazone. The result indicates that the novel NHC‐Pd complex can achieve better catalytic activity than the Pd‐phosphine catalysts in the synthesis of axially chiral N‐(2′‐methoxy‐1,1′‐binaphthalen‐2‐yl) benzophenone hydrazone.