Radical-mediated hydroxyalkylation of α,β-unsaturated esters
摘要:
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.
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
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.