144729-20-4Relevant articles and documents
The sydnone ring as an ortho-director of lithiation. 2. Dilithiation of 3-phenylsydnone and regiospecific @?o-aryl acylation using N-methoxy-N-methylamides
Turnbull, Kenneth,Sun, Congcong,Krein, Douglas M.
, p. 1509 - 1512 (2007/10/03)
Readily available 3-phenylsydnone (1) reacts with n-butyllithium/TMEDA to form the dilithio species 2 which can be regiospecifically acylated at the ortho-aryl position using N-methoxy-N-methylamides (Weinreb's amides).