An efficient preparation of β-ketophosphine oxides from alkynylphosphine oxides with benzaldehyde oxime as a hydroxide source
作者:Lu-Lu Chen、Jing-Wen Zhang、Wan-Wan Yang、Pei Chen、Dan-Yun Chen、Yan-Bo Wang
DOI:10.1039/c9ob00251k
日期:——
An effective and facile transition-metal-free method has been developed for the synthesis of β-ketophosphine oxides from alkynylphosphine oxides with benzaldehydeoxime as a hydroxide surrogate. The current methodology provides simple access to various β-ketophosphine oxides in moderate to excellent yields with a broad substrate scope.
A highly efficient palladium(II)‐catalyzedhydration of a wide range of alkynylphosphonates to the corresponding β‐ketophosphonates has been developed to give high yields at 80 °C in 1, 4‐dioxane, with no acidic or alkaline cocatalysts required. The described catalytic system should provide an efficient alternative to highly toxic mercury‐catalyzed methodologies and be useful in synthetic programs
Cuproussiloxane as two self-assemblies, Cu<sub>20</sub>O<sub>20</sub>Si<sub>10</sub>Me<sub>10</sub>R<sub>10</sub> and Cu<sub>24</sub>O<sub>24</sub>Si<sub>12</sub>Me<sub>12</sub>R<sub>12</sub>, with catalytic property