一种有效且普遍适用的协议,适用于palladacycle催化的芳基化 H-膦酸二异丙酯 在 水发展了。这种C–P键形成反应的显着特征包括宽范围的底物范围,包括不活泼的富电子和电子中性的芳基氯化物,弱的无机碱KF而不是诸如KO t Bu或NaO t Bu的强碱。C–Cl键,以及异丙醇 避免分解 H-膦酸二异丙酯。
A three-componentreaction involving arynes, trialkyl phosphites, and halides has been achieved under mild reaction conditions. This transformation provides a direct synthetic approach to ortho-halogenated arylphosphonates, which could be rapidly converted to diversely ortho-functionalized arylphosphorus compounds.
Synthesis of Aryl and Arylmethyl Phosphonates by Cross-Coupling of Aryl or Arylmethyl Halides (X = I, Br and Cl) with Diisopropyl H-Phosphonate
作者:Kai Xu、Hao Hu、Fan Yang、Yangjie Wu
DOI:10.1002/ejoc.201201230
日期:2013.1
applicable protocol for the palladacycle-catalysed arylation or K2CO3-promoted arylmethylation of diisopropyl H-phosphonate has been developed. The remarkable features of the palladacycle-catalysed arylation reaction include wide substrate scope (aryl iodides, bromides and chlorides), significant shortening of the reaction time (2 or 3 h) and a lowcatalystloading of 1 mol-%. Note that with the base K2CO3
Palladacycle-catalyzed phosphonation of aryl halides in neat water
作者:Kai Xu、Fan Yang、Guodong Zhang、Yangjie Wu
DOI:10.1039/c3gc00030c
日期:——
of diisopropyl H-phosphonate in water was developed. The remarkable features of this C–P bond-forming reaction include wide substrate scope including the inactive electron-rich and electron-neutral aryl chlorides, the weak inorganic base KF instead of strong bases such as KOtBu or NaOtBu for the activation of C–Cl bond, and the addition of isopropanol to avoid the decomposition of diisopropyl H-phosphonate
一种有效且普遍适用的协议,适用于palladacycle催化的芳基化 H-膦酸二异丙酯 在 水发展了。这种C–P键形成反应的显着特征包括宽范围的底物范围,包括不活泼的富电子和电子中性的芳基氯化物,弱的无机碱KF而不是诸如KO t Bu或NaO t Bu的强碱。C–Cl键,以及异丙醇 避免分解 H-膦酸二异丙酯。