Table 2.

Electron ionization mass spectral data

No.	R′	R″	M.+	[M-41]+	[C9H6NR′R″]+	[C10H8NR′R″]+, [C10H7NR′R″].+	[C8H4NR′R″]+, [C8H3NR′R″].+	Other fragments
1	H	H	240	199	130	144, 143	116, 115	--
2	H	Ph	316	275	206	220, 219	192, 191	--
3	4-AcO	H	298	257	188	202, 201	174, 173	256 (M - C2H2O), 239 (M - .OAc), 160 (188 - CO), 146 (188 - C2H2O)
4	4-OH	H	256	215	146	160, 159	132, 131	--
5	4,5-ED a	H	298	257	188	202, 201	176, 175	160 (188 - C2H4), 132 (160 - CO)
6	5-CH3	H	254	213	144	158, 157	130, 129	--
7	5-OCH3	H	270	239	160	174, 173	146, 145	239 (M - .OCH3), 145 (160 - .CH3), 240 (M - CH2O), 130 (160 - CH2O), 117 (145 - CO)
8	5-OCH3	CH3	284	243	174	188, 187	160, 159	253 (M - .OCH3), 159 (174 - .CH3), 144 (174 - CH2O), 131 (159 - CO)
9	5-OC2H5	H	284	241	174	188, 187	160, 159	269 (M - .CH3), 239 (M - C2H5O.), 146 (174 - C2H4)
10	5-F	H	258	217	148	162, 161	134, 133	--
11	5-F	CH3	272	231	162	176, 175	148, 147	--
12	5-Cl	H	274/276	233/235	164/166	178/180, 177/179	150/152, 149/147	239 (M - Cl.)
13	5-Br	H	318/320	277/279	208/210	222/220, 221/223	194/192, 193/191	239 (M - Br.)
14	5,6-MD b	H	284	243	174	188, 187	160, 159	228, 144 (174 - CH2O)
15	6-F	H	258	217	148	162, 161	134, 133	--
16	7-CH3	H	254	213	144	158, 157	130, 129	--
17	7-C2H5	H	268	227	158	172, 171	144, 143	239 (M - C2H5.)

^a4,5-(OCH₂CH₂O): 4,5-ethylenedioxy

^b5,6-(OCH₂O): 5,6-methylenedioxy.