在取代的3a,6-环氧异吲哚中,将邻硝基苯基叠氮化物[3 + 2]环加成到氧杂双环[2.2.1]庚烯部分的多重键上。1,3-偶极加成反应立体选择性地进行,产生一对异构的顺式-4,8a-环氧[1,2,3]三唑并[4,5- e ]异吲哚。该方法证明了合成方法可合成与γ-丁内酰胺部分稠合的环氧-1,2,3-苯并三唑异构体。
Rapid Ring‐Opening Metathesis Polymerization of Monomers Obtained from Biomass‐Derived Furfuryl Amines and Maleic Anhydride
作者:Anna Blanpain、James H. Clark、Thomas J. Farmer、Yuanlong Guo、Ian D. V. Ingram、John E. Kendrick、Stefan B. Lawrenson、Michael North、George Rodgers、Adrian C. Whitwood
DOI:10.1002/cssc.201900748
日期:——
Well‐controlled and extremely rapid ring‐opening metathesis polymerization of unusual oxanorbornene lactam esters by Grubbs third‐generation catalyst is used to prepare a range of bio‐based homo‐ and copolymers. Bio‐derived oxanorbornene lactam monomers were prepared at room temperature from maleic anhydride and secondary furfuryl amines by using a 100 % atom economical, tandem Diels–Alder lactamization