Methyl 2-[4-(2-chloroethyl)-2,3-dihydro-7-nitroquinoxalin-1-yl]benzoate from intramolecular cyclization of a nitroaromatic mustard.
C18H18CIN3O4, Mr = 375.81, orthorhombic, P212121, a = 11.000 (3), b = 8.023 (2), c = 19.316 (5) A, V = 1704.68 A3, Z = 4, Dm = 1.46 (1), Dx = 1.417 g cm-3, Mo Kalpha, lambda = 0.71069 A, mu = 1.82 cm-1, F(000) = 760, T = 293 (1) K, R = 0.051 for 985 [I greater than 2.5 sigma(I)] reflections. X-ray analysis confirms that the nitroaromatic mustard methyl N-(2-[bis(2-chloroethyl)amino]- 5-nitrophenyl)anthranilate undergoes rapid intramolecular cyclization, but the product is the 7-nitro rather than the 6-nitro derivative previously reported [Chambers & Denny (1986).
Buckleton
J S
JS
Department of Chemistry, University of Auckland, New Zealand.
Clark
G R
GR
Chambers
D
D
Denny
W A
WA
D000970:Antineoplastic Agents; D009588:Nitrogen Mustard Compounds; D014961:X-Ray Diffraction
D000970:Antineoplastic Agents; D009588:Nitrogen Mustard Compounds