Suresh, J. R. ; Kumar, U. K. Syam ; Ila, H. ; Junjappa, H. (2001) Aromatic and heteroaromatic annelation studies on 3-[bis(methylthio)methylene]-1-methyloxindole: synthesis of carbazoles and an efficient route to pyrido[2,3-b]indoles Tetrahedron, 57 (4). pp. 781-790. ISSN 0040-4020
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00404...
Related URL: http://dx.doi.org/10.1016/S0040-4020(00)01054-1
Abstract
The 3-[bis(methylthio)methylene]-1-methyloxindole (2) is shown to undergo cycloaromatization with allyl and methallyl magnesium chlorides to afford substituted carbazoles. A novel route to 2-substituted-3-cyano-4-methylthio/aminopyrido[2,3-b]indoles has been developed via heteroaromatic annelation of 2 with in situ generated 2-lithioamino-2-substituted acrylonitriles.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | α-Oxoketene Dithioacetals; Aromatic Annelation; Carbazoles; Pyrido[2; 3-b]-indoles |
| ID Code: | 15314 |
| Deposited On: | 13 Nov 2010 12:57 |
| Last Modified: | 03 Jun 2011 04:50 |
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