研究了通过区域选择性定向邻金属化(DoM)和交叉偶联反应对标题化合物进行的功能化。建立了3,7-DiOxa- r -1-AzaBicyclo [3.3.0] Oct- c -5-基甲氧基系统(DOABO-CH 2 O)与典型反应条件的相容性。考察了其作为定向邻金属化基团(DoMG)的作用,包括与经典DoMG,氯和甲氧基的竞争。某些功能化术语(例如DOABO–CH 2)的螯合能力讨论了取代手性二芳基甲醇和2,6-吡啶吡啶的聚氮杂类似物作为分子内空间关系,分别确定构型和结合选择性过渡金属的能力。
标题化合物的一般有效合成,包括用(3,7-二氧杂-r -1-氮杂双环[3.3.0] oct- c -5 (选择性)替代商业α-氯二嗪和氰尿酰氯中的氯描述了-甲氧基基团(Williamson方法)。分析了该新系列衍生物的立体化学,分别以溶液(1 H NMR)相对于固态(X射线衍射)相对于手性形式的中观表现出不同的构象手性。在固态下,指出了一些手性网络的包容能力以及它们的超分子聚集。c -5-di(s)的旋转异构行为之间具有良好的相关性发现处于两个状态的-三)二嗪基氧基甲基。
Multiple approaches are described for the elucidation of the stereochemistry in solution (high-resolution NMR spectroscopy) and in the solid state (X-ray diffractometry) that are based on ab initio calculations (level RHF/6-31G*) of some representative 3,7-dioxa-1-azabicyclo[3.3.0]octanes. The results are presented in terms of conformational analysis, anomeric effects, chelating properties and aggregation
The general and efficient synthesis of the title compounds, consisting of the (selective) replacement of chlorine in commercial α-chlorodiazines and cyanuryl chloride by the 3,7-dioxa-r-1-azabicyclo[3.3.0]oct-c-5-ylmethoxy group (Williamson method) is described. The stereochemistry of this new series of derivatives is analysed in terms of different conformational chirality exhibited in solution (1H
标题化合物的一般有效合成,包括用(3,7-二氧杂-r -1-氮杂双环[3.3.0] oct- c -5 (选择性)替代商业α-氯二嗪和氰尿酰氯中的氯描述了-甲氧基基团(Williamson方法)。分析了该新系列衍生物的立体化学,分别以溶液(1 H NMR)相对于固态(X射线衍射)相对于手性形式的中观表现出不同的构象手性。在固态下,指出了一些手性网络的包容能力以及它们的超分子聚集。c -5-di(s)的旋转异构行为之间具有良好的相关性发现处于两个状态的-三)二嗪基氧基甲基。
α-(3,7-Dioxa-r-1-azabicyclo[3.3.0]oct-c-5-ylmethoxy)-diazines. Part 2: Functionalisation via directed ortho-metallation and cross-coupling reactions
The functionalisation of the title compounds via regioselective Directed ortho-Metallation (DoM) and cross-coupling reactions is studied. The compatibility of the 3,7-DiOxa-r-1-AzaBicyclo[3.3.0]Oct-c-5-ylmethoxy system (DOABO–CH2O) to typical reaction conditions is established. Its role as Directed ortho-Metallation Group (DoMG) is examined, including competition with classical DoMGs, chlorine and
研究了通过区域选择性定向邻金属化(DoM)和交叉偶联反应对标题化合物进行的功能化。建立了3,7-DiOxa- r -1-AzaBicyclo [3.3.0] Oct- c -5-基甲氧基系统(DOABO-CH 2 O)与典型反应条件的相容性。考察了其作为定向邻金属化基团(DoMG)的作用,包括与经典DoMG,氯和甲氧基的竞争。某些功能化术语(例如DOABO–CH 2)的螯合能力讨论了取代手性二芳基甲醇和2,6-吡啶吡啶的聚氮杂类似物作为分子内空间关系,分别确定构型和结合选择性过渡金属的能力。