Enzyme-catalyzed chemoselective transesterification reactions on hydroxymethylated phenolic compounds
The chemoselective capabilities of porcine pancreatic lipase (PPL) in tetrahydrofuran and Candida rugosa lipase (CRL) in diisopropyl ether have been investigated for selective acetylation and deacetylation of hydroxymethylated phenols and hydroxyaryl alky
Parmar, Virinder S.,Prasad, Ashok K.,Pati, Hari N.,Kumar, Rajesh,Azim, Abul,Roy, Sucharita,Errington, William
p. 119 - 134
(2007/10/03)
A New General Synthesis of Hydroxy- and Methoxy-isoflavones
A new general synthesis of hydroxy- (5e-h) and methoxy- (5e-d) isoflavones has been accomplished in overall yields of 47-73percent from the corresponding 2-hydroxydeoxybenzoins (1a-h).The first step involves reaction with appropriate amounts of ethoxymeth
Jain, Amolak C.,Mehta, Anita
p. 215 - 220
(2007/10/02)
A New Synthesis of Isoflavanones
7-Methoxy-(3a)- and 5,7-dimethoxy-(3b)-isoflavanones have been synthesised in good yields by reacting corresponding o-hydroxydesoxybenzoins (1) with ethoxymethyl chloride in the presence of boiling acetone and dry potassium carbonate, followed by refluxing with ethanolic 4 percent aq. sodium carbonate.The products of the first step have been isolated as α-hydroxymethyldesoxybenzoins (2) and explanation of their formation is provided.
Jain, A. C.,Sharma, Anita
p. 451 - 452
(2007/10/02)
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