ISSN:
0170-2041
Keywords:
N-Heterocycles, condensed, regioselective synthesis of, structure elucidation of
;
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
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 1H-, 13C- and 15N-NMR data, NOE difference spectroscopy, and different two-dimensional carbon-proton correlation measurements.
Additional Material:
6 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.1991199101208