Radical-mediated hydroxyalkylation of α,β-unsaturated esters
作者:Tomoko Yajima、Chiaki Saito、Hajime Nagano
DOI:10.1016/j.tet.2005.08.039
日期:2005.10
The radical-mediated hydroxyalkylation of alpha,beta-unsaturated esters with alkyl iodides, trialkylborane, water and KF in THF gave the corresponding alpha-hydroxy esters. The synthetic advantage of the method was demonstrated by a short-step total synthesis of (+/-)-tanikolide. (c) 2005 Elsevier Ltd. All rights reserved.
Radical-mediated hydroxytrifluoromethylation of α,β-unsaturated esters
作者:Tomoko Yajima、Hajime Nagano、Chiaki Saito
DOI:10.1016/s0040-4039(03)01783-0
日期:2003.9
Treatment of alpha,beta-unsaturated esters with trifluoromethyl iodide and triethylborane in the presence of KF and H2O gave the corresponding hydroxytrifluoromethylated esters. (C) 2003 Elsevier Ltd. All rights reserved.
Substituent effect on the diastereoselectivity in the chelation-controlled radical reactions of γ-(p-substituted-benzyloxy)-α-methylene esters with alkyl iodides
作者:Tomoko Yajima、Kyoko Okada、Hajime Nagano
DOI:10.1016/j.tet.2004.05.020
日期:2004.6
A pronounced substituent effect on the diastereoselectivity in the chelation controlled radicalreactions of ethyl γ-(p-substituted-benzyloxy)-α-methylenecarboxylates with alkyliodides was observed. The syn-selectivity increased in the order of electron-donating ability NO2