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Heterocyclization with iminium chlorides, V. Condensation of 1,3-dichlorotrimethinecyanines with 1,3- and 1,2-dinucleophiles by Gábor Tóth; Attila Kovács; István Bitter; Helmut Duddeck is a Chemistry article available to read on EtoBox.

What is Heterocyclization with iminium chlorides, V. Condensation of 1,3-dichlorotrimethinecyanines with 1,3- and 1,2-dinucleophiles about?

## Abstract Cyclic 1,3‐dichlorotrimethinecyanines 1 were used for the preparation of condensed polycycles 2–13 with high regioselectivity. In the case of five‐membered cyanines the exclusive formation of the linear‐type products was observed, while with six‐ and seven‐membered cyanines the linear or angular type of products were obtained, depending on the character of the nucleophile. The structures of the products were supported by ^1^H‐, ^13^C‐ and ^15^N‐NMR data, NOE difference spectroscopy, and different two‐dimensional carbon‐proton correlation measurements.

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Author

Gábor Tóth; Attila Kovács; István Bitter; Helmut Duddeck

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); VCH Verlagsgesellschaft; Wiley (ISSN 0947-3440)

Published

1991

Language

EN

Field

Chemistry (Physical Sciences)