Two regiocomplementary approaches to angular furanocoumarins with chromium carbene complexes: synthesis of sphondin, thiosphondin, heratomin, and angelicin
The microwave-assisted Dötz benzannulation process
作者:Edward J. Hutchinson、William J. Kerr、Euan J. Magennis
DOI:10.1039/b206981b
日期:——
Chromium carbene-mediated Dötz benzannulation has been shown to proceed remarkably rapidly and with enhanced efficiency under developed microwave-assisted conditions.
Promotion of the chromium carbene Dötz annulation reaction under sonochemical and dry state adsorption conditions
作者:Joseph P.A. Harrity、William J. Kerr、David Middlemiss
DOI:10.1016/s0040-4020(01)87269-0
日期:1993.1
The chromium carbene Dotz annulation reaction proceeds very rapidly in the presence of ultrasound giving good yields of quinone product on oxidative workup. Moreover, the yield of annulated product has been improved by adsorbing the reagents onto silica and heating at moderate temperatures. Both these modifications have proved to be successful for a variety of complexes and alkynes.
WULFF, WILLIAM D.;MCCALLUM, J. STUART;KUNNG, FEN-ANN, J. AMER: CHEM. SOC., 110,(1988) N2, C. 7419-7434
作者:WULFF, WILLIAM D.、MCCALLUM, J. STUART、KUNNG, FEN-ANN