L'oxydation de la dihydro-2,3 azulenone-1 suvie d'une 乙酰化 Fournit les diacetoxy-1,4 et -1,6 azulenes qui servent de precurseurs pour les quinones。Aucune quinone n'a pu etre isolee sous forme Monone, mais a pu etre piegee par le cyclopentadiene en donnant des adduits Diels-Alder stables
Quinones of azulene. 4. Synthesis and characterization of the parent 1,5- and 1,7-quinones
作者:Lawrence T. Scott、Christopher M. Adams
DOI:10.1021/ja00329a037
日期:1984.8
Les quinones du titre sont preparees a partir de la dihydro-2,3 azulenone-1 et sont isolees sous forme de solides cristallises jaunes stables
Les quinones du titre sont preparees a partir de la dihydro-2,3 azulenone-1 et sont isolees sous forme de solides cristallises jaunes stable
Efficient synthesis of bicyclo[5.3.0]decatrienones and of 2-tetralones via rhodium(<scp>II</scp>) acetate-catalysed cyclisation of α-diazoketones derived from 3-arylpropionic acids
作者:M. Anthony McKervey、Sarbajna M. Tuladhar、M. Fiona Twohig
DOI:10.1039/c39840000129
日期:——
Rhodium (II) acetate-catalysed cyclisation of α-diazoketones derivedfrom 3-arylpropionic acid produces bicyclo[5.3.0]decatrienones or 2-tetralones depending on the substitution pattern of the aryl ring: the former products are transformed into the latter by catalytic amount of trifluoroacetic acid.
The intramolecular Buchner reaction of aryl diazoketones. Substituent effects and scope in synthesis
作者:Michael Kennedy、M. Anthony McKervey、Anita R. Maguire、Sarbajna M. Tuladhar、M. Fiona Twohig
DOI:10.1039/p19900001047
日期:——
cyclisation occurring in all cases. When the precursor contains a meta-methoxy substituent, 2-tetralones are obtained directly. The efficient conversion of 3-phenylpropionic acid into trans-1-methylbicyclo[5.3.0]decan-2-one is also described, partial asymmetric synthesis having been realised through the use of rhodium (S)-mandelate as the cyclisation catalyst. Cyclisations of diazoketonesderived from
Azulenes: a synthesis based on intramolecular carbene addition
作者:Lawrence T. Scott
DOI:10.1039/c39730000882
日期:——
Copper(I) chloride-catalysed decomposition of the diazoketones derived from dihydrocinnamic acids produces bicyclo[5,3,0]decatrienones which have been converted into azulenes in two steps.
Dense and stereo-controlled integrations of C–N bonds on the azulenone scaffold are achieved by sequential (i) ene, (ii) [6 + 2]-cycloaddition, and (iii) hetero-conjugate addition reactions leading to a topologically complex bis-bridged skeleton.