Horner Olefination Reaction in Organic Sulfur Chemistry and Synthesis of Natural and Bioactive Products
作者:Marian Mikołajczyk、Wanda H. Midura、Ashraf M. Mohamed Ewas、Wiesława Perlikowska、Maciej Mikina、Aleksandra Jankowiak
DOI:10.1080/10426500701734448
日期:2008.1.14
nates in tandem Michael addition/Horner olefination reaction leads to a wide range of carbocyclic and heterocyclic vinyl sulfoxides. In second part of this account a new strategy for the synthesis of functionalized cyclopentenones is briefly described. The synthesis and reactivity of 3-phosphorylmethyl-cyclopentenones is discussed as a platform for developing the synthesis of racemic rosaprostol, enantiomeric
本文概述了我们将霍纳烯化反应应用于合成不饱和硫化合物的工作结果。介绍了通过霍纳反应与 α-亚磺酰基甲基膦酸酯作为烯化试剂的外消旋和光学活性 α,β-不饱和亚砜的一般合成。我们展示了膦酸酯部分的结构如何控制上述反应中的 E 和 Z 立体选择性。在串联迈克尔加成/霍纳烯化反应中使用外消旋和光学活性 α-亚磺酰基乙烯基膦酸酯可产生多种碳环和杂环乙烯基亚砜。本报告的第二部分简要描述了合成功能化环戊烯酮的新策略。
α-Phosphoryl sulfoxides. Part XII. The question of sulfinyl oxygen participation in the alkaline hydrolysis of α-phosphoryl sulfoxides
作者:Marian Mikołajczyk、Wanda H. Midura、Reinhard Schmutzler、Hans-Martin Schiebel、Peter Schulze
DOI:10.1039/b101502h
日期:——
the sulfinyl group, as demonstrated by the EI- and CI-mass spectra. The hydrolysis of 8 in 18O-enriched water followed by methylation with diazomethane gave the sulfoxide 10 in which 18O was incorporated into the phosphonic ester moiety. These results do not support a two-step mechanism for the hydrolysis of α-phosphoryl sulfoxides involving participation of the neighbouring sulfinyl group and formation