A new alternative system for the chemoselective oxidation of secondary hydroxyl group to ketone with IBX/n-Bu4NBr in CH2Cl2–H2O has been developed. Under the reaction conditions, the secondary hydroxyl group was highly chemoselectively oxidized to the corresponding ketone, in moderate to good yields at rt, in the presence of primary hydroxyl group within the same molecule.
1,2-metallate rearrangements of α-alkoxyvinyl borates
作者:Simon Birkinshaw、Philip Kocieński
DOI:10.1016/0040-4039(91)80455-f
日期:1991.11
α-Alkoxyvinyl borates derived from reaction of 5-lithio-2,3-dihydrofuran with trialkylboranes rearrange by two different mechanisms depending on the reaction conditions.
An efficient and convenient one-pot strategy was developed for the synthesis of 1-hydroxydodecan-6-one, an important precursor for total synthesis of sphingofunginF. A series of ω-hydroxy ketones were prepared from readily available lactones using this one-pot reaction.
为合成鞘氨醇 F 全合成的重要前体 1-羟基十二烷-6-one 开发了一种高效便捷的一锅法。使用该一锅法从现成的内酯制备了一系列 ω-羟基酮反应。
Phenyliodine diacetate-mediated oxidative cleavage of cyclobutanols leading to γ-hydroxy ketones
作者:Hiromichi Fujioka、Hideyuki Komatsu、Akihito Miyoshi、Kenichi Murai、Yasuyuki Kita
DOI:10.1016/j.tetlet.2010.12.032
日期:2011.3
Oxidative cleavage of cyclobutanols using PIDA, which leads to efficient entry of gamma-hydroxy ketones, is described. When using 2-substituted cyclobutanols, gamma-substituted gamma-hydroxy ketones are obtained through regioselective C-C bond cleavage. (C) 2010 Elsevier Ltd. All rights reserved.
The chemistry of .alpha.-silyl carbonyl compounds. 12. A synthesis of 4-oxo carboxylic acids, 4-oxo aldehydes, and 1,4-diketones from .gamma.-lactones
作者:Rosa M. Betancourt de Perez、Lelia M. Fuentes、Gerald L. Larson、Charles L. Barnes、Mary Jane Heeg