Straightforward Synthesis of Bridged Azaoxa Skeletons: Gold-Catalyzed Aminoketalization of Garner’s Aldehyde-Derived Alkynes
作者:Benito Alcaide、Pedro Almendros、Rocío Carrascosa
DOI:10.1002/chem.201100139
日期:2011.4.26
Building bridges with gold: Bridged azaoxa skeletons have been efficiently prepared from easily accessible alkynyloxazolidine substrates under mild reaction conditions (see scheme; Boc=tert‐butoxycarbonyl). The reactions were found to proceed with complete control of the regio‐ and stereoselectivity of the products in the presence of a combined gold/silver and acid catalyst system.
用金架桥:在温和的反应条件下,由易于接近的炔基恶唑烷底物有效地制备了桥连的氮杂骨架(请参阅示意图; Boc =叔丁氧羰基)。发现在金/银和酸催化剂组合体系的存在下,反应可完全控制产物的区域选择性和立体选择性。