第二代Grubbs钌催化剂与乙烯基氧基三甲基硅烷的反应可有效生成具有N-杂环卡宾(NHC)配体的纯氢化钌络合物,并具有明确的特征。该氢化钌络合物对末端烯烃的选择性异构化和1,6-二烯的环异构化显示出高催化活性。的这些反应Ñ -allyl- Ò -vinylaniline导致新的合成方法杂环如吲哚和3-亚甲基-2,3- dihydroindoles,这对于生物活性天然产物有用的合成子。这些程序解决了面向多样性的综合中的一个重要问题。
Construction of nitrogen-heterocyclic compounds through zirconium mediated intramolecular alkene-carbonyl coupling reaction of N-(o-alkenylaryl)carbamate derivatives
Intramolecular alkene-carbonyl coupling reaction of N-benzyl-N-(o-alkenylaryl)carbamate derivative derived from o-aminostyrene, o-(aminomethyl)styrene and o-aminoallylbenzene smoothly proceeded by treating with zirconocene–butene complex to give the corresponding lactam derivative.
formula R4N[I(O2CAr)2] is reported. These compounds are air‐ and moisture‐stable iodine(I) reagents, which were characterized including X‐ray analysis. They represent conceptually new iodine(I) reagents with anions as stabilizers. These compounds display the expected performance as electrophilic reagents upon interaction with electron‐rich substrates. The performance of these compounds in a total of
报道了通式为R 4 N [I(O 2 CAr)2 ]的亲电碘试剂的一般合成,分离和表征。这些化合物是空气和水分稳定的碘(I)试剂,其特征包括X射线分析。从概念上讲,它们代表带有阴离子作为稳定剂的新碘(I)试剂。这些化合物在与富电子底物相互作用时作为亲电子试剂显示出预期的性能。研究了这些化合物在烯烃的邻位碘加氧的总共47个不同反应中的性能,并揭示了该试剂的一些关键特征。