62082-72-8Relevant academic research and scientific papers
REDUCTION OF 2'-HYDROXY CHALCONES UNDER PHASE TRANSFER CATALYSIS - A NEW METHOD FOR THE SYNTHESIS OF FLAVAN-4-OLS
Jyotsna, D.,Rao, A. V. Subba
, p. 1009 - 1014 (2007/10/02)
Reduction of 2'-hydroxy chalcones uner phase transfer catalysis conditions is discussed.The products are identified as 2,4-cis-flavan-4-ols.
STEREOSELECTIVITY AT BENZYLIC CARBON. FLAVANOIDS-V. SYNTHESIS OF TRANS-4-ACETAMIDOFLAVANS
Hirwe, A.,Marathe, K. G.,Mohorkar, S. S.,Ramdas, K.,Singh, C. B.
, p. 1539 - 1546 (2007/10/02)
Some reactions of 4-substituted flavans have been studied. 4-Chloro/bromo derivatives react under neutral conditions with phthalimide and acetonitrile leading to displacement of axial halogen by nitrogen with inversion.In contrast, irrespective of the ste
Epimerisation of 4-Acetoxyflavans and Flavan-4-ols
Attwood, Michael R.,Brown, Ben R.,Pike, William T.
, p. 2229 - 2236 (2007/10/02)
5,7,3',4'-Tetramethoxyflavan-4β-ol reacts at 0 deg C with pyridine, ang a trace of acetic acid to give the 4β-acetoxy derivative but at 90 deg C the 4α-acetoxyflavan is formed.Either acetate when equilibrated with this acetylating agent yields a mixture o
Synthesis of 4-Substituted Flavans from 4α-Halogenoflavans
Brown, Ben R.,Guffogg, Stephen,Kahn, Michael L.,Smart, John W.,Stuart, Ian A.
, p. 1825 - 1829 (2007/10/02)
The reactions of flavan-4α- or -4β-ols unsubstituted in ring A with phosphorus or similar halides give 4α-halogenoflavans which react with a variety of nucleophiles (phenolate ions, thiophenolate ions, amines, and alcohols) yielding the corresponding 4-su
