Selektive katalytische Hydrierungen und Hydrogenolysen, 4. Mitt. Darstellung von 1-Benzylisochinolinen
作者:Eberhard Reimann、Angelika Höglmüller
DOI:10.1002/ardp.19853180603
日期:——
Im Benzylrest substituierte 1‐Benzylisochinoline 4 werden durch hydrolytische Spaltung der leicht zugänglichen 1,2‐Dihydro‐Verbindungen 3 erhalten.
在苄基中取代的 1-苄基异喹啉 4 通过水解裂解容易获得的 1,2-二氢化合物 3 获得。
Protoberberines from Reissert-Compounds VIII [1]. Oxazoloisoquinolines, New and Efficient Educts for the Synthesis of 8-Oxoprotoberberines
作者:Eberhard Reimann、Fritz Grasberger、Kurt Polborn
DOI:10.1007/s00706-003-0013-5
日期:2003.6
Certain benzylated oxazoloisoquinolinones readily available fromReissert compounds provided an efficient access to 8-oxoprotoberberines in three steps. A series of these new precursors as well as several oxoprotoberberines were prepared and the scope and limitation of this procedure were investigated.
Organocatalytic asymmetric destruction of 1-benzylated Reissert compounds catalysed by quaternary cinchona alkaloids
作者:Kim Frisch、Karl Anker Jørgensen
DOI:10.1039/b710494d
日期:——
consequence of an asymmetric destruction of the racemic compounds resulting in the formation of the corresponding 1-benzylated isoquinolines. The highest selectivity has been achieved using quaternarycinchonaalkaloids as phase-transfer catalysts. The resolution of a number of racemic 1-benzylated Reissert compounds reveals a significant substrate dependence and a proposal for the mechanism of the reaction
Phase transfer catalysis under ultrasound. Alkylation of isoquinoline Reissert compound
作者:Jesus Ezquerra、Julio Alvarez-Builla
DOI:10.1039/c39840000054
日期:——
Comparative experiments showed that ultrasonic irradiation improved the yields and reduced times in the phase-transfer catalysed alkylation of the Reissertcompound 2-benzoyl-1,2-dihydroisoquinoline-1-carbonitrile.
Selektive katalytische Hydrierungen und Hydrogenolysen, 3. Mitt. Synthese von 1-Benzyl-5,6,7,8-tetrahydroisochinolinen Selective Catalytic Hydrogenations and Hydrogenolyses, III: Synthesis of 1-Benzyl-5,6,7,8-tetrahydroisoquinolines