Reaction of 2-[(E)-Styryl]quinazolin-4(3H)-one with Acetylenic Esters: Formation of Unexpected N-3 Alkenylation Products.
β Scribed by Tapasi Chatterjee; Subhagata Chattopadhyay; Ranjan Mukhopadhyay; Basudeb Achari; Santu Chakraborty; Alok K. Mukherjee
- Publisher
- John Wiley and Sons
- Year
- 2005
- Weight
- 16 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0931-7597
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β¦ Synopsis
Abstract
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## Abstract magnified image 3,4βDihydroβ2βHβpyran and oxalyl chloride react, depending on the conditions, to keto esters, a pyranβ3βcarboxylic acid or derivatives thereof, or to an hitherto unknown bicyclic acetal containing a vinyl chloride moiety. The structure of the latter product has been una
## Abstract The reaction of (I) with oxalyl chloride and selected nucleophilic reagents leads to the unexpected bicyclic product (IV) and/or dihydropyran carboxylic acid derivatives, e.g. (V) and (VIII).
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