Syntheses of Pyrrolo- and Indoloisoquinolinones by Intramolecular Cyclizations of 1-(2-Arylethyl)-5-benzotriazolylpyrrolidin-2-ones and 3-Benzotriazolyl-2-(2-arylethyl)-1-isoindolinones
作者:Alan R. Katritzky、Shamal Mehta、Hai-Ying He
DOI:10.1021/jo001273f
日期:2001.1.1
1-alpha]isoquinolin-3(2H)-ones 17a,b, 17d,e, and 5,12b-dihydroisoindolo[1,2-alpha]isoquinolin-8(6H)-ones 22a-e were prepared by intramolecular cyclizations of 1-(2-arylethyl)-5-benzotriazolyl-pyrrolidin-2-ones 15a,b, 15d,e, and 3-benzotriazolyl-2-(2-arylethyl)-1-isoindolinones 20a-e, respectively, in the presence of titanium chloride. Products from chiral amines were obtained with stereoselectivities of > or
1,5,6,10b-四氢吡咯并[2,1-α]异喹啉-3(2H)-一个17a,b,17d,e和5,12b-二氢异吲哚并[1,2-α异喹啉-8(6H) )-酮22a-e是通过1-(2-芳基乙基)-5-苯并三唑基-吡咯烷-2-酮15a,b,15d,e和3-苯并三唑基-2-(2-芳基乙基)-的分子内环化制备的1-异吲哚啉酮20a-e分别在氯化钛存在下。获得手性胺的产物,其立体选择性≥94%。