9-羧基氧杂蒽类化合物的合成及质谱裂解规律

The Sythesis of Xanthene-9-carboxylic Acid Derivatives and Its Mass Spectrometry Behavior

合成了二十个9－羧基氧杂蒽类衍生物。对所有化合物的CIMS和EIMS进行了研究。结果表明CIMS显示出丰度较大的M＋28（29）或M（M＋1）峰；EIMS主要显示m／e209和181碎片，且m／e181常为基峰。

Twenty derivatives of xanthene-9-carboxylic acid have been prepared and allcompounds were confirmed by means of CIMS and EIMS. The CIMS showed peak of M＋28 (29) or M (M ＋1) with large abundance;while EIMS mainly showed peaks of m/e209 and 181,usually with m/e 181 as base peak.