A General Synthesis of Bis-α-acyloxy-1,4- and -1,5-diketones Through Catalytic Oxidative Opening of Acylated THF and THP Diols
作者:Vincenzo Piccialli、Stefano D'Errico、Nicola Borbone、Giorgia Oliviero、Roberto Centore、Sabrina Zaccaria
DOI:10.1002/ejoc.201201554
日期:2013.3
The first general synthesis of bis-α-acyloxy-1,4- and -1,5-diketones has been accomplished in a catalytic oxidative opening of bis-acylated THF and THP (tetrahydropyran) diols, which were synthesised by osmium- or ruthenium-catalysed oxidative cyclisation of 1,5- and 1,6-dienes. The overall sequence corresponds to the regioselective double ketoacyloxylation of the starting diene. The synthesised bis-α-acyloxy-1
双-α-酰氧基-1,4-和-1,5-二酮的首次一般合成是在双酰化的 THF 和 THP(四氢吡喃)二醇的催化氧化开环中完成的,这些二醇是由锇或钌合成的-催化氧化环化 1,5- 和 1,6- 二烯。整个序列对应于起始二烯的区域选择性双酮酰氧基化。合成的双-α-酰氧基-1,5-二羰基化合物已转化为基于吡啶的氧化钳配体或吡嗪二甲醇物质,从而发现了前所未有的芳构化路线。