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Rouden J, Seitz T, Lemoucheux L, Lasne MC. Studies toward labeling cytisine with [11C]phosgene: rapid synthesis of a delta-lactam involving a new chemoselective lithiation-annulation method. J Org Chem. 2004 May 28;69(11):3787–93. doi: 10.1021/jo0498157. PMID: 15153010. |