title: A novel one-pot four-component access to tetrahydro-beta-carbolines by a coupling-amination-aza-annulation-Pictet-Spengler sequence (CAAPS).
abstract: The four-component coupling-amination-aza-annulation-Pictet-Spengler (CAAPS) sequence of acid chlorides 1, terminal alkynes 2, tryptamine derivatives 6, and acryloyl chloride derivatives 4 represents a facile and rapid one-pot access to tetrahydro-beta-carbolines 7 in moderate to good yields.
authors.affiliation: Organisch-Chemisches Institut der Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany.
authors.forename: Alexei S
authors.initials: AS
authors.lastname: Karpov
authors.forename: Thomas
authors.initials: T
authors.lastname: Oeser
authors.forename: Thomas J J
authors.initials: TJ
authors.lastname: Müller