127680-28-8Relevant articles and documents
The halogen-lithium exchange reaction of 3,3-dichloro-2-azetidinones: Application to the synthesis of cis-4-aryl-3-chloro-2-azetidinones
Dejaegher, Yves,Denolf, Bram,Stevens, Christian V.,De Kimpe, Norbert
, p. 193 - 198 (2005)
A straightforward synthesis of new cis-4-aryl-3-chloro-2-azetidinones was developed, using a halogen-lithium exchange reaction on 4-aryl-3,3-dichloro-2- azetidinones. This methodology was further extended to the use of alkyl halides as electrophiles, while more complex electrophiles could not be introduced.
Aziridines as templates: A general strategy for the stereospecific synthesis of 2-azetidinones
Sharma,Kanwar, Seema,Rajpoot, Shivani
, p. 11 - 19 (2007/10/03)
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.