Quinoxaline 2-alkoxy-, preparation

Kinetic studies have been carried out on the displacement reactions of various chloroazanaphthalenes with ethoxide ions and piperi-dine. - 2-Chloroquinoxaline is even more reactive than 2-chloro-quinazoline, thus demonstrating the powerfully electrophilic nature of the -carbon atoms in the quinoxaline nucleus. The ease of displacement of a-chlorine in the quinoxaline series is of preparative value thus, 2-alkoxy-, 2-amino-, - 2-raethylamino-, 2-dimethyl-amino-,2-benzylamino-, 2-mercapto-quinoxalines are all readily prepared from 2-chloroquinoxaline. The anions derived from substituted acetonitriles have also been used to displace chloride ion from 2-chloroquinoxaline, ... 

Several general reports covered more than one type of diazine. For example, Cu(II) complexes of a diverse set of alkoxy diazine ligands were prepared, and their magnetic properties investigated. X-ray crystal structure determinations of many of these were included <04IC4278>. New sulfinylcinnolines, quinoxalines, quinazolines, and phthalazines were prepared from appropriate halobenzodiazines. These were converted to sulfanyl benzodiazines, which in turn... 

---

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

---