2-Methylbenzc,dindole was prepared from naphthostyril, 2-Methyl- and -2-methylthio-benz [c,d]indoles gave 2-[(benz[c,d]indole-2(1H)-yliden)methyl]benz[c,d]-indole in good yield. Visible spectra of methine dyes originating from this base were considered.

中文翻译：

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2-甲基苯并[ c，d ]吲哚及其衍生物

2-甲基苯并C，d吲哚从naphthostyril制备，2-甲基-和-2-甲硫苯并并[c，d]吲哚，得到2- [（苯并[C，d]吲哚-2 （1H） -yliden ）甲基]苯并并[c，d]以良好的收率-吲哚。考虑了源自该碱的次甲基染料的可见光谱。