作者:György Keglevich、Melinda Sipos、Daniella Takács、Krisztina Ludányi
DOI:10.1002/hc.20421
日期:2008.4
P-heterocyclic γ-ketophosphonates were synthesized by the Michael reaction of methyl vinyl ketone with dibenzo-1,2-oxaphosphorine 2-oxide, 1,3,2-dioxaphosphorine 2-oxide and benzo-1,3,2-dioxaphospholane 2-oxide, respectively. In the first two cases, 50% of 1,8-diazabicyclo[5.4.0[undec-7-ene had to be used that was also required in the addition of dibenzooxaphosphorine oxide to cyclohexenone to result
P-杂环γ-酮膦酸酯是通过甲基乙烯基酮与二苯并-1,2-氧杂膦2-氧化物、1,3,2-二氧杂膦2-氧化物和苯并-1,3,2-二氧杂膦2-氧化物的迈克尔反应合成的氧化物,分别。在前两种情况下,必须使用 50% 的 1,8-二氮杂双环[5.4.0[undec-7-ene],这也是将氧化二苯并氧杂膦添加到环己烯酮中以形成相应的 γ-酮膦酸盐。在用等摩尔量的三甲基铝活化后,将二苯并氧杂膦氧化物加成到反应性较低的 1,2-二氢膦氧化物中,得到 3-P(O)<-1,2,3,6-四氢膦氧化物,将其加入催化加氢得到相应的 1,2,3,4,5,6-六氢氧化膦。© 2008 Wiley Periodicals, Inc. 杂原子化学 19:288-292, 2008; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20421