磷-迈克尔加成反应是磷基亲核试剂与受体取代的不饱和键的加成反应,它无疑是形成PC键的最通用,最强大的工具之一,因为可以使用许多不同的亲电试剂和P亲核试剂。彼此结合。这提供了访问许多功能多样的产品的可能性。在这项工作中,使用了两种基于吡啶的碱性有机催化剂有效地催化磷-迈克尔加成反应:4- N,N-二甲基氨基吡啶糖精盐(DMAP·Hsac)盐和氟长链吡啶(4- R f -CH 2 OCH 2 -py,其中R f = C11楼23)。这些催化剂已经合成并且由Lu's基团表征。在这些催化剂存在下,亚磷酸二异丙酯,亚甲基二甲基或三乙基亚磷酸酯在α,β-不饱和丙二酸酯中的磷-迈克尔加成反应显示出非常好的反应性,在80-100°C下可在1-4.5 h内获得高收率,并具有高催化回收率和可重复使用性。关于显着的催化剂回收,有时通过使用非极性溶剂(例如醚)使催化剂析出,DMAP·Hsac加合物有时观察到超过八
P–C Bond formation via direct and three-component conjugate addition catalyzed by 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD)
作者:Zhiyong Jiang、Yan Zhang、Weiping Ye、Choon-Hong Tan
DOI:10.1016/j.tetlet.2006.11.019
日期:2007.1
The direct addition of P(O)–H bonds (dialkylphosphites and diphenyl phosphonite) across various activated alkenes was catalyzed effectively by 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD). This is a mild, rapid and efficient protocol to generate P–C bonds. This simple procedure allows a series of dialkylalkylphosphonates and trisubstituted phosphine oxides to be prepared in high yields. Further investigation
Phospha-Michael addition of diethyl phosphite to α,β-unsaturated malonates catalyzed by nano γ-Fe2O3-pyridine based catalyst as a new magnetically recyclable heterogeneous organic base
Nano γ-Fe2O3-pyridine based catalyst as a new magnetically recyclable heterogeneous organic base was synthesized. The synthesized odorless pyridine based catalyst was used as a new catalyst for the efficient synthesis of β-phosphonomalonates by the reaction of diethyl phosphite with α,β-unsaturated malonates. The catalyst was easily isolated from the reaction mixture by a magnetic bar and reused at
Phospha-Michael addition of phosphorus nucleophiles to α,β-unsaturated malonates using 3-aminopropylated silica gel as an efficient and recyclable catalyst
gel, which is prepared from commercially available and cheap starting materials, is introduced as an efficient and recyclable catalyst for the phospha-Michael addition of phosphorus nucleophiles to α,β-unsaturated malonates. Short reaction times, mild reaction conditions, ease of recovery and catalyst reusability make this method a new, economic and waste-free chemical process for the synthesis of β-phosphonomalonates
Phosphomolybdic acid: An efficient and reusable catalyst for the synthesis of β-phosphono malonates
作者:S. Sobhani、S. Rezazadeh
DOI:10.1007/bf03246216
日期:2011.3
Phosphomolybdic acid (H3PMo12O40) is an efficient and reusablecatalyst for the synthesis of the phospha-Michael addition of phosphite esters with different types of α,β-unsaturated malonates to produce a variety of β-phosphono malonates.
磷钼酸(H 3 PMo 12 O 40)是一种有效且可重复使用的催化剂,用于合成具有不同类型的α,β-不饱和丙二酸酯的亚磷酸酯的phospha-Michael加成,以生产各种β-膦酰基丙二酸酯。
Efficient, Solvent-Free, Multicomponent Method for Organic-Base-Catalyzed Synthesis of β-Phosphonomalonates
作者:Reddi Mohan Naidu Kalla、Huiju Park、Hye Ri Lee、Hongsuk Suh、Il Kim
DOI:10.1021/acscombsci.5b00109
日期:2015.11.9
An efficient, one-pot, di-n-butylamine-catalyzed, three-component synthesis of beta-phosphonomalonates has been developed. A wide range of substrates, including aromatic and fused aromatic aldehydes, were condensed with enolizable C-H activated compounds and dialkylphosphites to give the desired products in excellent yields. This method provides an eco-friendly alternative approach to rapid construction of a diversity-oriented library of beta-phosphonomalonates.