Effective and one-step stereo-controlled synthesis of benzyloxylated-diiodopentanes for the synthesis of five-membered imino-sugars
摘要:
An effective and stereo-controlled synthesis of 1,3,4-tris(benzyloxy)-2,5-diiodopentane starting from 2,3,5-tris(benzyloxy)pentane-1,4-diol was reported. Synthesis was improved to get the diiodide compound instead of forming the ring-closure product (benzyloxylated tetrahydrofuran). From the diiodide intermediate, the five-membered aza-sugar was synthesized with high yield. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
Effective and one-step stereo-controlled synthesis of benzyloxylated-diiodopentanes for the synthesis of five-membered imino-sugars
摘要:
An effective and stereo-controlled synthesis of 1,3,4-tris(benzyloxy)-2,5-diiodopentane starting from 2,3,5-tris(benzyloxy)pentane-1,4-diol was reported. Synthesis was improved to get the diiodide compound instead of forming the ring-closure product (benzyloxylated tetrahydrofuran). From the diiodide intermediate, the five-membered aza-sugar was synthesized with high yield. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
A new green method for the preparation of nitrones through the aerobicoxidation of the corresponding N,N‐disubstituted hydroxylamines has been developed upon exploring the catalytic activity of a diruthenium catalyst, that is, [Ru2(OAc)4Cl]), in aqueous or alcoholic solution under mild reaction conditions (0.1 to 1 mol % catalyst, air, 50 °C) and reasonable reaction times. Notably, the catalytic activity