One-Pot Synthesis of Alkyl Indeno[1,2-b]quinoxalin-11-ylideneacetates under Solvent-free Conditions
作者:Javad Azizian、Mohammad R. Mohammadizadeh、Narges Karimi、Ali A. Mohammadi、Ali R. Karimi
DOI:10.3987/com-04-10168
日期:——
A series of alkylindeno[1,2-b]quinoxalin-11-ylideneacetates (3a-f) were prepared using the simple one-pot reactions involving triphenylphosphine, alkyl bromoacetate, ninhydrin, 1,2-phenylenediamines and NaOAc under solvent free-condition.
Regioselective synthesis of novel dispiropyrrolidine and dispiropyrrolizidine oxindole derivatives via azomethine ylide specific [3+2]-cycloaddition
作者:Srinu Lanka、Sathiah Thennarasu、Paramasivan T. Perumal
DOI:10.1039/c3ra44953j
日期:——
Structurally complex spiro analogues of indenoquinoxaline have been synthesized via the cycloaddition reaction of azomethine ylides with alkyl indeno[2,1-b]quinoxalin-11-ylidene acetate dipolarophiles in a highly regioselective and stereoselective manner. The structure and relative stereochemistry of the cycloadducts were confirmed using 1H and 13C-NMR spectroscopic methods, and single crystal X-ray diffraction studies.
通过偶氮甲基与茚并[2,1-b]喹喔啉-11-亚基乙酸烷基酯二极亲物的环加成反应,以高度区域选择性和立体选择性的方式合成了结构复杂的茚并喹喔啉螺类似物。利用 1H 和 13C-NMR 光谱法以及单晶 X 射线衍射研究证实了环加成物的结构和相对立体化学性质。