Novel synthesis of 6,6-dibromo-2′-Z-chloromethyl and 2′-Z-bromomethyl anhydropenicllins from 6,6-dibromo 2β-(chloromethyl) and 2β-(bromomethyl)-2α-methyl-penam-3α-carboxylic acid via anhydropenicillin rearrangement
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Add time:09/10/2019 Source:sciencedirect.com
We describe the preparation of isomerically pure 2′-Z-chloromethyl and 2′-Z-bromomethyl anhydropenicillins 2a and 2b, from 6,6-dibromo 2β-(chloromethyl) and 2β-(bromomethyl)-2α-methyl-penam-3α-carboxylic acid through the Wolfe rearrangement of anhydropenicillins.
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