One-pot synthesis of non-symmetric tetraoxanes with the H2O2/MTO/fluorous alcohol system☆
摘要:
1,2,4,5-Tetraoxanes, potent antimalarial drugs, were selectively synthesized in fluorous alcohols (2,2,2-trifluoroethanol-TFE and 1,1,1,3,3,3-hexafluoro-2-propanol-HFIP). A use of these solvents enabled for the first time a one-pot synthesis of non-symmetric tetraoxanes in good yields from simple ketones and aldehydes with 2 equiv. of 30% hydrogen peroxide and 0.1 mol% of methyltrioxorhenium (MTO). (C) 2003 Elsevier Ltd. All rights reserved.
Ozonolysis in the Presence of Lewis Acids: Directed Addition to Carbonyl Oxides
作者:Patrick H. Dussault、Joseph M. Raible
DOI:10.1021/ol006478p
日期:2000.10.1
The presence of Lewis acids strongly influences the distribution of products from alkene ozonolysis. Delivery of alkoxide and phenoxide ligands to a coordinated carbonyloxide affords hydroperoxyacetals under aprotic conditions.