Stereoselective Synthesis of 2-Alkenylaziridines and 2-Alkenylazetidines by Palladium-Catalyzed Intramolecular Amination of α- and β-Amino Allenes
作者:Hiroaki Ohno、Miyuki Anzai、Ayako Toda、Shinya Ohishi、Nobutaka Fujii、Tetsuaki Tanaka、Yoshiji Takemoto、Toshiro Ibuka
DOI:10.1021/jo015683v
日期:2001.7.1
Whereas palladium-catalyzed reaction of N-arylsulfonyl-alpha-amino allenes with an aryl iodide (4 equiv) in the presence of potassium carbonate (4 equiv) in DMF at around 70 degrees C affords the corresponding 3-pyrroline derivatives, the reaction in refluxing 1,4-dioxane under otherwise identical conditions yields exclusively or most predominantly the corresponding 2-alkenylaziridines bearing an aryl
在碳酸钾(4当量)存在下,在DMF约70摄氏度下,钯催化N-芳基磺酰基-α-氨基丙二烯与碘代芳基碘(4当量)的反应可得到相应的3-吡咯啉衍生物在其他条件相同的条件下,回流1,4-二恶烷仅或最主要地产生在双键上带有芳基的相应的2-烯基氮丙啶。同样,在DMF中,在钯催化的环化条件下,N-芳基磺酰基-β-氨基丙二烯也可以环化成带有2,4-顺式构型的相应烯基氮杂环丁烷。