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Abstract magnified image Various routes to a variety of azridine‐2‐carboxylates have been described and the stereochemistry of these compounds has been determined by spectroscopic methods. Further, greater diversity of β‐lactams via ring expansion of these azridines‐2‐carboxylates were obtained by a general, efficient and direct stereospecific approach.
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S. D. SHARMA (2006) studied this question.
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