84278-66-0Relevant academic research and scientific papers
Preparation of 4-haloazetidin-2-ones from 4-sulfinoazetidin-2-ones
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, (2008/06/13)
Process for 4-halo azetidinones of the formula STR1 wherein R1 is acylamino or diacylamino, X is chloro, bromo or iodo, and R is a carboxy-protecting group which comprises treating a 4-sulfinoazetidinone of the formula STR2 with positive haloge
Method of preparation of 3-methylenecephams
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, (2008/06/13)
Penicillin sulfoxide derived azetidinone sulfinyl chlorides and related sulfinic acid derivatives are cyclized to 3-methylenecephams by reaction with Friedel-Crafts catalysts or metathetic cation forming agents.
