Table 1. Chemical, Physical, and Analytical Data of Derivatives 9a−h and 10a−i.

compd	R6	R7	R8	mp (°C)	recryst solventa	yield (%)	analysis
9ab	H	H	H	242−244	a	56	C, H, N (C11H9NO2)
9b	F	H	H	>300	b	29	C, H, N, F (C11H8FNO2)
9c	H	F	H	270−271	c	41	C, H, N, F (C11H8FNO2)
9d	H	H	F	268−270	b	40	C, H, N, F (C11H8FNO2)
9eb	Cl	H	H	>300	b	29	C, H, N, Cl (C11H8ClNO2)
9fb	H	Cl	H	>300	b	96	C, H, N, Cl (C11H8ClNO2)
9gb	H	H	Cl	>300	b	55	C, H, N, Cl (C11H8ClNO2)
9h	Cl	Cl	H	114−115	d	19	C, H, N, Cl (C11H7Cl2NO2)
10a	H	H	H	213−214	d	65	C, H, N, F (C18H14FNO2)
10b	F	H	H	234−235	e	94	C, H, N, F (C18H13F2NO2)
10c	H	F	H	186−187	e	100	C, H, N, F (C18H13F2NO2)
10d	H	H	F	193−194	f	78	C, H, N, F (C18H13F2NO2)
10e	Cl	H	H	214−216	e	92	C, H, N, Cl, F (C18H13ClFNO2)
10f	H	Cl	H	185−187	e	73	C, H, N, Cl, F (C18H13ClFNO2)
10g	H	H	Cl	215−217	g	92	C, H, N, Cl, F (C18H13ClFNO2)
10h	Cl	Cl	H	235−237	d	49	C, H, N, Cl, F (C18H12Cl2FNO2)
10i	H	1-pyrrolidinyl	H	175−177	e	56	C, H, N, F (C22H21FN2O2)

^aRecrystallization solvents: (a) aceton, (b) ethanol, (c) isopropanol, (d) toluene, (e) toluene/cyclohexane, (f) benzene/cyclohexane, (g) benzene.

^bReference (17).