Methyl 1 valerolactone an important intermediate of semi synthetic harringtonine was synthesized from malonic acid and isobutyraldehyde by Knoevenagel condensation followed by isomerization and lactonization in 53 % overall yield .
以丙二酸和异丁醛 为 起始 原料,通过Knoevenagel缩合,再经异构化和内酯化反应合成了 γ -甲基 -1 戊 内酯,总收率53%
Ring-opening copolymerization of γ - valerolactone and ε - caprolactone catalyzed by boron trifluoride etherate
三氟化硼-乙醚络合物催化γ- 戊 内酯与ε-己内酯开环共聚的研究
Bulk ring-opening copolymerization of γ - valerolactone (γ - VL ) and ε - caprolactone (ε - CL ) was carried out with boron trifluoride etherate complex ( BF_3 · OEt_2 ) as catalyst .
以三氟化硼乙醚络合物为催化剂,进行了γ- 戊 内酯(γ -VL)与ε-己内酯(ε-CL)的本体开环共聚的研究。
美[vəli:oʊ'læktoʊn]英[vəli:əʊ'læktəʊn]
n.戊内酯