Application of samarium diiodide in mediating intramolecular cyclization reactions was reviewed.综述了二碘化钐在分子内环化反应中的应用.Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studie...
Cyclization occurs readily with dilute alkali.遇到稀碱就容易环化.Menthol was obtained from lemon eucalyptus oil via cyclization and catalytic hydrogenation.以柠檬桉叶油为主要原料经环化、催化氢化二步反应得到薄荷醇.METHODS Cilnidipine was synthesized from cin...
Medical authorities were baffled, both as to its causes and its virulence.医疗当局对其病因及有多致命都还不甚了解。I confess it's got me baffled.我承认这把我难倒了。The question baffled me completely and I couldn't answer it.这个问题把我彻底难倒了,我答不出...
A visitor savors a twilight run along a beach on the island of Tobago.在多巴哥岛黎明的微光里,一位旅者正在海边怡人风光中跑步.The dining room of a small hotel on Tobago offers a poolside seat.这个南美多巴哥岛的小旅馆,在餐厅提供有靠近游泳池的雅座.Barbados and the Republic of...