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A clay-mediated eco-friendly thiocyanation of indoles and carbazoles

2003; Elsevier BV; Volume: 44; Issue: 44 Linguagem: Inglês

10.1016/j.tetlet.2003.09.032

1873-3581

Manas Chakrabarty, Sandipan Sarkar,

Chemical Synthesis and Reactions

Indoles 1a–f and carbazoles 3a–c on treatment with ammonium thiocyanate on montmorillonite K10 clay at 80°C furnished the corresponding 3-thiocyanato derivatives 2a–f and 4a–c in good to high yields. Skatole 5 furnished the dimeric oxindole 6, which resulted from autoxidation.