title: Synthesis of Chiral Bicyclic Guanidinium Salts using Di(imidazole-1-yl)methanimine.
abstract: A detailed account of the synthesis of chiral bicyclic guanidinium salts is presented. This work represents the first systematic investigation of an approach toward the challenging target molecules via a key guanylation step employing di(imidazole-1-yl)methanimine (6) followed by a two-fold cyclization, which resulted in guanidinium salts 8 and 10. Factors governing the regioselectivity of the final cyclization step are discussed based on further data obtained in the course of the attempted syntheses of two additional bicyclic guanidinium salts.
authors.affiliation: Institute of Organic Chemistry and ‡Institute of Inorganic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany.
authors.forename: Aleksej
authors.initials: A
authors.lastname: Turočkin
authors.affiliation: Institute of Organic Chemistry and ‡Institute of Inorganic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany.
authors.forename: Roman
authors.initials: R
authors.lastname: Honeker
authors.affiliation: Institute of Organic Chemistry and ‡Institute of Inorganic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany.
authors.forename: William
authors.initials: W
authors.lastname: Raven
authors.affiliation: Institute of Organic Chemistry and ‡Institute of Inorganic Chemistry, RWTH Aachen University , Landoltweg 1, 52074 Aachen, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Selig