75163-81-4Relevant academic research and scientific papers
Synthesis and photophysical properties of selenopheno[2,3-b]quinoxaline and selenopheno[2,3-b]pyrazine heteroacenes
Koketsu, Mamoru,Ninomiya, Masayuki,Shimozuma, Atsushi,Sonawane, Amol D.,Udagawa, Taro
, p. 4063 - 4070 (2020)
In this paper, we report the novel synthesis of three different heterocycles, namely 2-arylselenopheno[2,3-b]quinoxaline, 3-(aryl/alkylselanyl)-2-arylselenopheno[2,3-b]quinoxaline and 6-phenyl-7-(arylselanyl)selenopheno[2,3-b]pyrazine derivatives, from th
NaSH in the construction of thiophene ring fused with N-heterocycles: A rapid and inexpensive synthesis of novel small molecules as potential inducers of apoptosis
Kolli, Sunder Kumar,Nakhi, Ali,Medishetti, Raghavender,Yellanki, Swapna,Kulkarni, Pushkar,Ramesh Raju,Pal, Manojit
supporting information, p. 4460 - 4465 (2015/02/19)
A facile construction of a thiophene ring fused with N-heterocycles has been achieved via the reaction of NaSH with 2-chloro-3-alkynyl quinoxalines/pyrazines leading to novel 2-substituted thieno[2,3-b]pyrazine/quinoxaline derivatives as potential inducer
Synthesis of thieno[2,3-b]quinoxalines from 2-haloquinoxalines
Armengol, Montserrat,Joule, John A.
, p. 154 - 158 (2007/10/03)
Thieno[2,3-b]quinoxalines were synthesized from 2-haloquinoxalines using palladium catalyst. The coupling of latter with alkynes and addition of one mol equivalent of bromine to the 2-alkynylquinoxalines thus produced was described. The resulting dibromid
Preparation and Reactions of 2-Alkynyl-3-chloroquinoxalines.
Ames, Donald E.,Mitchell, John C.,Takundwa, Chisango C.
, p. 1683 - 1696 (2007/10/02)
2-Alkynyl-3-chloroquinoxalines are prepared from 2,3-dichloroqionoxaline and alk-1-ynes: use of 2-methylbut-3-yn-2-ol, and the removal of acetone with base, yields 2-chloro-3-ethynylqionoxaline.The chloroalkynes are readily converted into pyrrolo- and thi
Efficient Syntheses of Thienoquinoxalines
Ibrahim, Yehia A.,Badawy, M. A.,El-Bahaie, S.
, p. 699 - 700 (2007/10/02)
Three simple routes for the synthesis of thienoquinoxalines are described.
Alkynyl- and Dialkynyl-quinoxalines. Synthesis of Condensed Quinoxalines
Ames, Donald E.,Brohi, M. Ismail
, p. 1384 - 1389 (2007/10/02)
Condensation of 2-chloro- and 2,3-dichloroquinoxalines with alk-1-ynes in the presence of bis(triphenylphosphine)palladium(II) dichloride and copper(I) iodide gives mono- and di-alkynylquinoxalines.Addition of amines to these products gives stable enamines; hydration gives 2'-oxoalkyl compounds which exist predominantly in the intramolecularly hydrogen-bonded enol form.Condensation of the alkynylquinoxalines with diethyl sodiomalonate, and related compounds, yields pyridoquinoxalin-4-one derivatives. 2-Alkynyl-3-chloroquinoxalines are intermediates for convenient syntheses of pyrroloquinoxalines.
