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|Title:||Syntheses of novel derivatives of 2-acetylfuro[2,3-]carbazoles, benzo[1,2-b]-1,4-thiazepino[2,3-]carbazoles and 1-acetyloxycarbazole-2-carbaldehydes|
Prasad, K J Rajendra
|Keywords:||1-hydroxycarbazole-2-carbaldehydes;o-aminothiophenol;2-acetylfuro carbazoles;benzo carbazoles;phenyl oxopyranocarbazoles|
|IPC Code:||Int.Cl.8 C07D|
|Abstract:||An elegant one pot syntheses of the titled compounds 3a-d, 4a-d and 6a-d have been presented starting from 1-hydroxycarbazole-2-carbaldehydes 2a-d in good yields. Treatment of 1-hydroxycarbazole-2-carbaldehydes 2a-d with chloroacetone and with o-aminothiophenol have afforded the novel 2-acetylfuro[2,3-]carbazoles 3a-d and benzo-[1,2-b]-1,4-thiazepino[2,3-]carbazoles 4a-d respectively. Further carbazoles 2a-d are treated with phenyl acetic acid in an attempt to synthesize 3-phenyl-2-oxopyrano[2,3-]-carbazoles 5a-d, but the reaction did not proceed in the anticipated direction and only acetyl derivatives 6a-d are obtained. All the products thus obtained from these reactions are well characterized by spectroscopic and analytical data.|
|Appears in Collections:||IJC-B Vol.45B(08) [August 2006]|
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