Trialkyl (ferrocenyl methyl)ammonium salts and their 2-substituted analogs designed for the preparation of molecular ferromagnetics based on bimetallic oxalates were synthesized using classical alkylation of dialkylaminomethylferrocenes by alkyl halides and nucleophilic substitution reaction of 2-substituted dimethylaminomethylferrocene methiodides with trialkylamines. In the case of salts with electron-donating substituents in position 2, only the latter of the two proposed routes is applicable because IV-alkylation with alkyl halides is accompanied by competing ferrocenylmethylation of the starting amine. On the contrary, the salts with electron-withdrawing 2-substituents should be prepared preferably by the reaction of amines with alkyl halides, while nucleophilic trialkylamination of methiodides is complicated by deprotonation. induced by bases.
DOI:
10.1023/a:1011377611293
作为产物:
描述:
[α-(N,N-dimethylaminomethyl)ferrocenyl]lithium 、 碘甲烷 以
not given 为溶剂,
以75%的产率得到Cyclopenta-1,3-diene;iron(2+);trimethyl-[(2-methylcyclopenta-1,3-dien-1-yl)methyl]azanium;iodide
参考文献:
名称:
二茂铁胺的锂化和钒二氮化学
摘要:
二茂铁基胺[Fe(C 5 H 5)(C 5 H 4 CH 2 R)](R = NMe 2,NEt 2,CH 2 NMe 2,NC 4 H 8 O或NMeCH 2的锂化Ph)与有机锂试剂不会在环的位置2进行干净的反应。通常会形成一系列产品,有时很难分离。穆斯堡尔光谱法和电化学测试表明,这些配合物中铁的电子状态在化合物之间没有太大差异。报道了二茂铁基胺的几种甲基化衍生物的晶体结构。所有二茂铁胺似乎都增强了钒(II)吸收二氮的能力,但无法确定形成的二氮物种的确切性质。