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
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。
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