Mass spectral fragmentation pattern of 2,2′‐Bipyridyls. Part IX. 6‐Alkoxy‐2,2′‐bipyridyls

The mass spectral fragmentation patterns of 6‐methoxy‐, 6‐ethoxy‐ and 6‐propoxy‐2,2 ′‐bipyridyls are reported. The base peaks in the spectra of both the 6‐methoxy and 6‐ethoxy compounds are due to the M‐lion of 6‐methoxy‐2,2′‐bipyridyl, while the base peak with 6‐propoxy‐2,2‐ bipyridyl is due to a species formed by loss of C 3 H 6 from the molecular ion.