Detail of "1536-23-8"

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Mass spectra of dicyanomethylene derivatives of benzophenone analogs: Mass spectra of dicyanomethylene derivatives of benzophenone analogs. Wang, Ching Bore; Her, Guor Rong; Watson, J. Throck (Dep. Biochem., Michigan State Univ., East Lansing, MI 48824, USA). Org. 1536-23-8 and 134-85-0 are cas registry numbers. These chemicals are also mentioned in this article. Mass Spectrom., 18(11), 457-61 (English) 1983. CODEN: ORMSBG. ISSN: 0030-493X. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Section cross-reference(s): 25 The dicyanomethylene deriv. of a benzophenone analog, e.g. Ph2C:C(CN)2, significantly alters the fragmentation pattern obsd. during electron impact ionization of the underivatized parent compd. A double bond connecting the dicyanomethylene moiety to the parent compd. is cleaved during a major fragmentation path for many of these compds. A mechanism involving rearrangement of two H atoms is proposed to explain cleavage of this double bond. Conventional mass spectra as well as collisionally activated dissocn. mass spectra of selected ions of several model compds. are reported in support of a proposed fragmentation mechanism. .