“…For our synthetic strategy, 2,3,4,9-tetrahydro-1H-carbazol-1-ones prepared in our laboratory were used as precursors, opening new avenues for the synthesis of highly functionalized carbazole derivatives such as 1-hydroxyimino-2,3,4,9-tetrahydro-1H-carbazoles, 1-hydroxycarbazoles, and 1-hydroxy-2-formylcarbazoles. The functionalized carbazoles thus prepared lead to mukonine isomers, oxazolocarbazoles, girinimbine isomers, pyranocarbazoles, indoloisoflavones, indolocoumarins, indoloxanthones, benzocarbazoles, carbazolyloxypropanolamines and pyrazolo-, isoxazolo-, furo-, oxazino-, pyrimido-, pyridazino-, ISSN 2056-9890 pyrido-, pyrazino-and indolo-carbazoles in excellent yields (Shanmugasundaram & Rajendra Prasad, 1999;Sridharan & Rajendra Prasad, 2011;Sridharan, Beagle et al, 2008 and references cited therein). Herein, we report the synthesis and crystal structure of 1-hydroxy-8-methyl-9H-carbazole-2carbaldehyde (Fig.…”