Oxidative rearrangement of pentaalkoxychalcones with phenyliodine(III) bis(trifluoroacetate) (PIFA): synthesis of (±)-10-bromopterocarpin and (±)-pterocarpin
Mori, Kenji; Kisida, Hirosi, Liebigs Annalen der Chemie, 1989, p. 35 - 40
作者:Mori, Kenji、Kisida, Hirosi
DOI:——
日期:——
MORI, KENJI;KISIDA, HIROSI, LIEBIGS ANN. CHEM.,(1988) N 7, 721-723
作者:MORI, KENJI、KISIDA, HIROSI
DOI:——
日期:——
MORI, KENJI;KISIDA, HIROSI, LIEBIGS ANN. CHEM.,(1989) N, C. 35-39
作者:MORI, KENJI、KISIDA, HIROSI
DOI:——
日期:——
Oxidative rearrangement of pentaalkoxychalcones with phenyliodine(III) bis(trifluoroacetate) (PIFA): synthesis of (±)-10-bromopterocarpin and (±)-pterocarpin
作者:Yasuyoshi Miki、Rie Fujita、Ko-ichi Matsushita
DOI:10.1039/a803561j
日期:——
The oxidative rearrangement of pentaalkoxychalcones using the hypervalent iodine compound, phenyliodine(III) bis(trifluoroacetate) (PIFA), has been examined. Treatment of 2,2′-bis(benzyloxy)-4′-methoxy-4,5-methylenedioxychalcone with PIFA gives a rearrangement product in low yield, but 2,2′-bis(benzyloxy)-3-bromo-4′-methoxy-4,5-methylenedioxychalcone yields the rearrangement product, which leads to (±)-bromopterocarpin and (±)-pterocarpin.