Studies towards 1,3-diol units starting from syn β-hydroxy acylsilanes
摘要:
Three complementary strategies have been explored to obtain stereodefined 1,3 diols starting from easily accessible syn beta-hydroxy acylsilanes: fluoride induced migrations of substituents on silicon, a Grignard addition followed by protodesilylation and Tischenko-type reactions. Preliminary data on scope and limitations of these processes are presented. (C) 2013 Elsevier Ltd. All rights reserved.
Studies towards 1,3-diol units starting from syn β-hydroxy acylsilanes
摘要:
Three complementary strategies have been explored to obtain stereodefined 1,3 diols starting from easily accessible syn beta-hydroxy acylsilanes: fluoride induced migrations of substituents on silicon, a Grignard addition followed by protodesilylation and Tischenko-type reactions. Preliminary data on scope and limitations of these processes are presented. (C) 2013 Elsevier Ltd. All rights reserved.
The redox isomerization processes and tandem isomerization-aldolization reactions, mediated by nickel catalysts, offer new versatile entries to acylsilanes. For the second reaction, high diastereoselectivities, up to 98:2, have been obtained with bulky substituents on silicon.
Studies towards 1,3-diol units starting from syn β-hydroxy acylsilanes
Three complementary strategies have been explored to obtain stereodefined 1,3 diols starting from easily accessible syn beta-hydroxy acylsilanes: fluoride induced migrations of substituents on silicon, a Grignard addition followed by protodesilylation and Tischenko-type reactions. Preliminary data on scope and limitations of these processes are presented. (C) 2013 Elsevier Ltd. All rights reserved.