Lewis base catalyzed trialkylsilylcyanide additions to cyclic 2-fluoroketones: nucleophile directed access to both cis- and trans-stereoisomers
作者:Kayla K. Brawley、Todd A. Davis
DOI:10.1016/j.tetlet.2016.03.112
日期:2016.5
trialkylorganosilanes (TMSCN & TBSCN) to cyclic 2-fluoroketones has been developed producing the TMS- or TBS-protected cyanohydrins in good yields and diastereoselectivity. The Lewis base, solvent, and trialkylorganosilane have a dramatic effect on the reaction time and stereoselectivity for these reactions. TMSCN reacted the fastest using DIPEA as the Lewis base, and favored the cis product (up to 22:1)