HFIP Promoted C3 Alkylation of Lawsone and 4-Hydroxycoumarin with Alcohols by Dehydrative Cross-Coupling
作者:Yixin Chen、Yurong Wang、Rong Zhong、Jinshan Li
DOI:10.1021/acs.joc.0c01207
日期:2020.8.21
An environmentally benign system for the direct alkylation of lawsones and 4-hydroxycoumarins with alcohols in 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) is reported. The reaction proceeded smoothly via a dehydrative cross-coupling process by utilizing the unique properties of HFIP. A variety of alkylated products and subsequent one-pot cyclized products (pyranonaphthoquinones and pyranocoumarins) could be obtained in 40-93% yields.
Fieser, Journal of the American Chemical Society, 1926, vol. 48, p. 3202,3206
作者:Fieser
DOI:——
日期:——
Synthèse de nouveaux dérivés de l'hydroxy-2-naphtoquinone-1,4
作者:C. Beaudet
DOI:10.1002/hlca.19470300650
日期:1947.10.15
Kralt,T. et al., Recueil des Travaux Chimiques des Pays-Bas, 1967, vol. 86, p. 961 - 970
作者:Kralt,T. et al.
DOI:——
日期:——
THE ADDITION OF DIAZOMETHANE AND SOME OF ITS DERIVATIVES TO ALPHA-NAPHTHOQUINONE