TABLE 1.

Relevant Mass Spectra of Coumarins 1

1a (X = H)		1b (X = CI)		1c (X = Br)		1d (X = NO2)
m/e	(%)	m/e	(%)	m/e	(%)	m/e	(%)
146 (M∗%)	96.8	182 (M∗%)	56.52	226 (M∗%)	96	191 (M∗%)	62.22
131	1.01	180	93.47	224	100	185	2.22
118	100.00	179	1.08	198	58.73	175	2.44
92	2.38	154.6	44.56	196	57.14	173	2.22
90	19.04	152.5	100.00	181	1.10	163	24.44
89	52.38	128.5	0.54	179	0.15	161	26.66
63	18.25	126.5	6.52	172	2.38	154	1.25
39	10.08	124.5	16.30	170	2.38	145	4.44
–		117.5	3.26	143	1.58	143	3.21
–		99.5	2.17	117	11.90	133	33.33
–		89.3	71.73	89	73.01	117	46.66
–		73.3	8.69	63	19.05	105	23.33
–		63.3	34.78	39	3.17	89	95.55
–		62.3	26.08	–		772	8.88
–		61.3	8.69	–		63	100.00
–		–		–		51	46.66