Spectrometric Study of the Nitrile-Ketenimine Tautomerism

Table 2

MS² data for ethyl-4,4-dicyano-3-methyl-3-butenoate.

Precursor ion (m/z)	Relevant product ions (m/z)
178	150, 133, 132, 106, 105, 104, 66
150	106, 78, 66
133	105
132	104
106	78, 66