Activating Imides with Triflic Acid: A General Intramolecular Aldol Condensation Strategy Toward Indolizidine, Quinolizidine, and Valmerin Alkaloids

Activating Imides with Triflic Acid: A General Intramolecular Aldol Condensation Strategy Toward Indolizidine, Quinolizidine, and Valmerin Alkaloids P₄O₁₀/TfOH mediated domino condensation–cyclization of amines with diacids: a route to indolizidine alkaloids under catalyst- and solvent-free conditions One-pot tandem route to fused indolizidines and quinolizidines: Application in the synthesis of alkaloids and bioactive compounds Stereoselective and Stereospecific Triflate‐Mediated Intramolecular Schmidt Reaction: Ready Access to Alkaloid Skeletons** Synthesis of 4-Vinyl-1,2,3,4-tetrahydroisoquinoline from N-Tethered Benzyl-Alkenol Catalyzed by Indium(III) Chloride: Formal Synthesis of (±)-Isocyclocelabenzine Enantioselective Total Synthesis of (−)‐Limaspermidine and (−)‐Kopsinine by a Nitroaryl Transfer Cascade Strategy Total Synthesis of a Pyrroloindoloquinazoline Alkaloid Development of TfOH‐Catalyzed Spirocyclization by Intramolecular Friedel‐Crafts‐type 1,4‐Addition: Application to the Total Synthesis of the Unusual Proaporphine Alkaloid (±)‐Misrametine Asymmetric Palladium‐Catalyzed Dearomative Intramolecular N‐Alkylation Reaction: Enantioselective Total Synthesis of (−)‐Spiroquinazoline An Effective Approach to the Strychnos Alkaloids: Total Synthesis of Tubifolidine