... Volume: Page: Digital Object Identifier (DOI). ... Organic Letters. ... figure Scheme 3. Coupling with Iminophosphorane 10 a. a Reagents and conditions: (a) 5-T (3.0 equiv), HOBt (3.0 equiv), DIC (3.0 equiv), DMF 23 °C, 3 h. (b) R 3 P (1.0 M), THF, 23 °C, 5 min. ...