ISSN:
1434-4475
Keywords:
Dimerization of 2-benzylidene-1-indanone, base catalysed
;
Spiro{cyclopenta[a]indene-2,2′(1H,3′H)-indene}-1′,8(3H)-dione, 3a,8a-dihydro-1,3-diphenyl
;
2-Benzylidene-1-indanone, base catalysed dimerization
;
Two-dimensional nmr-spectroscopy
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Heating of 2-benzylidene-1-indanone (1) either in dimethylformamide in the presence of guanidine carbonate or inn-propanol in the presence of thiourea and sodium propylate yields a dimerP with the structure of 1,3-diphenyl-3a,8a-dihydrospiro{cyclopenta[a]indene-2,2′(1H,3′H)-indene}-1′,8(3H)-dione (7); this was deduced from the 400 MHz-1H- and 100MHz-13C-nmr-spectra and the corresponding two-dimensional HH- and CH-correlations. A possible mechanism for the formation of the spirocompound 7 is proposed; the stereo formula of the dimer7 K was established on the basis of a 400 MHz-HH-NOESY experiment.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00810262
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