Abstract The paper describes the preparation of a new salt spiropyran of indoline series containing vinyl-3 H -indolium fragment in the 8' position of the 2 H -chromene moiety and a chlorine atom in the benzene ring of the indoline fragment. The structure of the reaction product was studied by IR, 1 H, and 13 C NMR spectroscopy. The data of X-ray diffraction study indicate that the reaction leads to the partial exchange of the indoline hetarene fragment to provide previously described salt spiropyran containing no chlorine atom in the indoline portion of the molecule.

中文翻译：

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用阳离子片段取代二氢吲哚螺吡喃合成中分子的异戊二烯部分

摘要 本文描述了一种新的二氢吲哚系列盐螺吡喃的制备，该螺吡喃的2 H-色烯部分的8'位含有乙烯基-3 H-吲哚片段，二氢吲哚片段的苯环上含有一个氯原子。通过IR、 1 H和13 C NMR光谱研究反应产物的结构。X-射线衍射研究的数据表明，该反应导致二氢吲哚环戊二烯片段的部分交换以提供先前描述的在分子的二氢吲哚部分不含氯原子的盐螺吡喃。