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A Phospha‐Wittig Route to 5‐Phosphaphenanthrene
Author(s) -
Wang Huaiqiu,
Zhao Weining,
Zhou Yang,
Duan Zheng,
Mathey François
Publication year - 2011
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201100466
Subject(s) - chemistry , intramolecular force , wittig reaction , adduct , cycloaddition , reactivity (psychology) , condensation , nuclear magnetic resonance spectroscopy , stereochemistry , crystal structure , medicinal chemistry , crystallography , organic chemistry , catalysis , medicine , physics , alternative medicine , pathology , thermodynamics
The reaction of tributylphosphane with a 7‐(2′‐formyl‐2‐biphenylyl)phosphanorbornadiene P‐W(CO) 5 complex leads to the 5‐phosphaphenanthrene P‐W(CO) 5 complex via an intramolecular phospha‐Wittig condensation. This complex is stable enough for detection by 31 P NMR spectroscopy but cannot be isolated due to its high reactivity. It is trapped by addition of MeOH or cycloaddition with 2,3‐dimethylbutadiene or a nitrileimine. The adducts were characterized by X‐ray crystal structure analysis.