83303-24-6Relevant academic research and scientific papers
Synthesis and NMR spectra of Nonafulvene and Comparison with 10-Phenylnonafulvene
Furrer, Juerg,Boenzli, Peter,Frey, Alfred,Neuenschwander, Markus,Engel, Peter
, p. 862 - 880 (2007/10/02)
Experimental procedures for the reaction of cis,cis,cis,trans-cyclononatetraenide (ccct-CNT-; see 4) with bromomethyl acetate (1a, R = H, X = Br) to give (cyclononatetraenyl)methyl acetate (5a; 84percent yield) as well as for the base-induced elimination of HOAc from 5a to give nonafulvene (6a; 44percent yield) are described.Spectroscopic as well as chemical evidence for 6a and 6b is presented.An approximate high-field-NMR analysis of 6a and 6b has been completed.The results are in favour of a fast interconversion of the type 6A 6B, and supported by the MNDO-optimised geometry of 6a.The first X-ray analysis of a cyclononatetraene (i.e. of 5b) has been accomplished: 5b is a polyolefinic molecule with largely alternating bond lengths and with a nine-membered ring deviating strongly from planarity.
Preparation and Utilisation of Organometallic Ylids containing the Tricarbonyliron Unit
Hackett, Paul,Johnson, Brian F. G.,Lewis, Jack,Jaouen, Gerard
, p. 1247 - 1252 (2007/10/02)
The reaction of tertiary phosphines, PR3, with six- and seven-membered ring dienyl complexes of Fe(CO)3 produces the corresponding phosphoniodiene salts.These salts undergo deprotonation on treatment with either LinBu or NaH and undergo a subsequent reaction with aldehydes (R'CHO) to yield the appropriate olefinic complexes.With , reaction with Ph3 produces simple substitution complexes of the type .Treatment of with HPF6 produces a salt of unknown structure which reacts with PPh3 to produce tricarbonyl(triphenylphosphoniomethylcyclo-octatetraene)iron hexafluorophosphate.Reaction of this salt with LinBu and HCHO yields tricarbonyl(vinylcyclo-octatetraene)iron.
