Jyotsna, D.; Rao, A. V. Subba, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1987, vol. 26, # 1-12, p. 877 - 878
作者:Jyotsna, D.、Rao, A. V. Subba
DOI:——
日期:——
JYOTSNA, D.;RAO, A. V. SUBBA, INDIAN J. CHEM., 26,(1987) N 9, 877-878
作者:JYOTSNA, D.、RAO, A. V. SUBBA
DOI:——
日期:——
Ruthenium-NHC-Catalyzed Asymmetric Hydrogenation of Flavones and Chromones: General Access to Enantiomerically Enriched Flavanones, Flavanols, Chromanones, and Chromanols
作者:Dongbing Zhao、Bernhard Beiring、Frank Glorius
DOI:10.1002/anie.201302573
日期:2013.8.5
Two to four! Readily available flavones and chromones were efficiently converted into four valuable chiral classes of O‐heterocycles—flavanones, chromanones, flavanols, and chromanols—by means of an enantioselective Ru/NHC‐catalyzed hydrogenation process (see scheme; NHC=N‐heterocyclic carbene, PCC=pyridinium chlorochromate).
Efficient cobalt(ii) phthalocyanine-catalyzed reduction of flavones with sodium borohydride
作者:Pratibha Kumari、Poonam、Shive M. S. Chauhan
DOI:10.1039/b912928f
日期:——
Efficient and facile reductions of flavones with sodium borohydride (NaBH4) catalyzed by cobalt(II) phthalocyanines afford cis-flavan-4-ols in 89-97% yields.