title: Sterically stabilized cyclopropenonophanes and an electronically stabilized cyclopropenethionophane: syntheses, structural properties, and reactivity.
abstract: The syntheses of sterically stabilized cyclopropenonophanes as well as an electronically stabilized cyclopropenethionophane are reported, and their molecular structures in the solid state are elucidated. The sulfur of the CS moiety in cyclopropenethiones was shown to react as a nucleophile. Temperatures of more than 240 degrees C favor the extrusion of CO in the cyclopropenonophane to afford an alpha,alpha'-tetramethyl-substituted cyclodiyne. [reaction: see text]
authors.affiliation: Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany.
authors.forename: Daniel B
authors.initials: DB
authors.lastname: Werz
authors.forename: Andreea
authors.initials: A
authors.lastname: Schuster
authors.forename: Rolf
authors.initials: R
authors.lastname: Gleiter
authors.forename: Frank
authors.initials: F
authors.lastname: Rominger