Mass Spectra of New Heterocycles: XXII. Electron Impact and Chemical Ionization of 1-Alkyl(cycloalkyl, alkoxyalkyl)-5-[(alkyl, allyl, benzyl)sulfanyl]-1H-pyrrol-2-amines
作者:L. V. Klyba、N. A. Nedolya、E. R. Sanzheeva、O. A. Tarasova
DOI:10.1134/s1070428021030040
日期:2021.3
benzyl)sulfanyl]-1H-pyrrol-2-amines under electron impact (70 eV) and chemical ionization (with methane as reactant gas) has been studied for the first time. All the examined compounds under electron impact generated the molecular ion [M]+· (Irel 5–90%) whose primary fragmentation involved mainly cleavage of the C–S bond in the SR4 substituent with elimination of R4 radical (except for 1-isopropyl-
摘要 1-烷基(环烷基,烷氧基烷基)-5-[(烷基,烯丙基,苄基)硫烷基] -1 H-吡咯-2-胺在电子轰击(70 eV)和化学电离下(以甲烷为反应气)裂解被第一次研究。在电子作用下,所有检测的化合物均产生了分子离子[ M ] + ·(I rel为5–90%),其主要断裂主要涉及SR 4取代基中C–S键的裂解以及R 4自由基的消除(除了1-异丙基和1-环烷基-1 H-吡咯-2-胺)。1-异丙基(环烷基)-N,N分解的主要途径-二甲基-5-[[甲基,烯丙基]硫烷基] -1 H-吡咯-2-胺是C-N键的裂解,同时从吡咯氮原子上消除了R 1基团,并通过吡咯环断裂消除亚胺(或氮丙啶)分子并形成奇电子[ M – NR 1 ] + ·自由基阳离子。标题化合物的化学电离涉及质子化,电荷交换和亲电加成过程,并从[ M + H] +离子消除Me(Et)和SMe(SEt)自由基。