Efficient entry into 2-substituted tetrahydroquinoline systems through alkylative ring expansion: Stereoselective formal synthesis of (±)-martinellic acid
... Volume: Page: ... rearrangement of oxime sulfonate followed by either alkylation or reduction gave nitrogen-containing heterocycles.(11) This ... azomethine yilide, which spontaneously underwent [3+2] cycloaddition to give indenopyrrolidine 14 in 78% yield. ...