Synthesis and conformational analysis of tetrahydroisoquinoline- and piperidine-fused 1,3,4,2-oxadiazaphosphinanes, new ring systems
作者:Zita Zalán、Tamás A. Martinek、László Lázár、Reijo Sillanpää、Ferenc Fülöp
DOI:10.1016/j.tet.2006.01.018
日期:2006.3
representatives of these ring systems, were prepared. NMR and X-ray diffraction studies revealed that, independently of the P-substituent and the relative configuration of the phosphorus atom, 13, 14, 17 and 18 could be characterized by trans-connected hetero rings and the chair conformation of the 1,3,4,2-oxadiazaphosphinane moiety, while the stereochemistry of the connection of the hetero rings in the 1,3,4
通过四氢异喹啉和哌啶-1,2-二肼基醇与苯基膦酰二氯和苯基二氯,环化P的1,6,7,11b四氢-4- -epimeric非对映体ħ -oxadiazaphosphino -1,3,4,2 [5,4 -一个]异喹啉-3-氧化物(13和14),1,6,11,11a四氢-4- ħ -1,3,4,2-oxadiazaphosphino并[4,5- b ]异喹啉-3-氧化物(15和16)和1,6,7,8,9,9a-hexahydro-4 H-吡啶[1,2- d ] [1,3,4,2]草二氮膦3氧化物(17和18),这些环系统的第一批代表已经准备好了。NMR和X射线衍射研究显示,独立于P -取代和磷原子的相对构型,13,14,17和18可以通过反式连接的杂环和1,3的椅式构象的特征在于1,4,2-氧杂二氮杂膦烷部分,而线性地稠合于四氢异喹啉(15和16)的1,3,4,2-氧杂二氮杂膦杂环中的杂环连接的