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http://nopr.niscpr.res.in/handle/123456789/21498| Title: | Studies on the cyclisation of two key allyl phenol intermediates of bromotyrosine based natural products |
| Authors: | Mallavadhani, Uppuluri V Narasimhan, K |
| Issue Date: | Jan-2003 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Cyclisation of two key allyl phenol intermediates viz. 2-allyl-6-bromo-4-formyl phenol 1 and 4-acetyl-2-allyl-6-bromo phenol 2 has been studied under a variety of acid catalysts. While mineral and organic acids did not yield any cyclic products, polyphosphoric acid and 70% perchloric acid affected the cyclisation upto 55-70%. Significantly the cationic montmorillonite clays have been used for the first time and found to affect the regioselective cyclisation and yielded the five membered coumarans in quantitative yields. |
| Page(s): | 199-201 |
| ISSN: | 0975-0983(Online); 0376-4699(Print) |
| Appears in Collections: | IJC-B Vol.42B(01) [January 2003] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCB 42B(1) 199-201.pdf | 538.36 kB | Adobe PDF | View/Open |
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