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Used in combination with a chiral diamine to effect displacement of a mesylate with Trimethylsilyl azide, L00173, in the asymmetric synthesis of (+)-pancratistin: J. Am. Chem. Soc., 117, 10143 (1995).• Reacts with lithium enolates of esters, in the presence of CO and excess TMEDA, to give good yields of ɑ-cyclopropyl esters: Angew. Chem. Int. Ed., 31, 234 (1992).