The Efficient Synthesis of Morphinandienone Alkaloids by Using a Combination of Hypervalent Iodine(III) Reagent and Heteropoly Acid
作者:Hiromi Hamamoto、Yukiko Shiozaki、Hisanori Nambu、Kayoko Hata、Hirofumi Tohma、Yasuyuki Kita
DOI:10.1002/chem.200400358
日期:2004.10.18
The non-phenolic coupling reaction of benzyltetrahydroisoquinolines (laudanosine derivatives) by using a hypervalent iodine(III) reagent is described. In general, chemical oxidation of laudanosine gives glaucine. In contrast to general chemical oxidizing reagent systems, the novel use of reagent combination of phenyliodine bis(trifluoroacetate) (PIFA), and heteropoly acid (HPA) afforded morphinandienone
描述了通过使用高价碘(III)试剂进行的苄基四氢异喹啉(月桂肌苷衍生物)的非酚偶联反应。通常,月桂肌苷的化学氧化产生青光氨酸。与一般的化学氧化试剂系统相比,苯基碘双(三氟乙酸盐)(PIFA)和杂多酸(HPA)试剂组合的新用途以极高的收率提供了吗啡酮。为了通过简单的反应步骤实现偶联反应,证明了使用硅胶负载的HPA代替HPA,并再次发挥了足够的收率。本试剂体系PIFA / HPA也被用于其他非酚苄基四氢异喹啉的氧化反应,并成功地转化为吗啡酮。