Reaction of tungsten-phosphinidene and -arsinidene complexes with carbodiimides and alkyl azides: a straightforward way to four-membered heterocycles.
Reaction of tungsten-phosphinidene and -arsinidene complexes with carbodiimides and alkyl azides: a straightforward way to four-membered heterocycles.
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钨-次膦基和-亚胂配合物与碳二亚胺和烷基叠氮化物的反应:制备四元杂环的直接方法
DOI:
10.1002/anie.201410191
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发表时间:
2015
影响因子:
--
通讯作者:
M. Scheer
中科院分区:
文献类型:
--
作者:
M. Seidl;C. Kuntz;M. Bodensteiner;A. Y. Timoshkin;M. Scheer
The reaction of the phosphinidene and arsinidene complexes [Cp*E{W(CO)5}2] (E=P (1 a), As (1 b); Cp*=C5Me5) with carbodiimides leads to the new four‐membered heterocycles of the type [Cp*C(NR)2E{W(CO)5}2] (E=P: R=iPr (2 a), Cy (3 a); E=As: R=iPr (2 b), Cy (3 b)). The reaction of phosphinidene complex1 awith alkyl azides yields the triazaphosphete derivatives [Cp*P{W(CO)5}N(R)NN{W(CO)5}] (R=Hex, Cy) (4). These unprecedented N3P four‐membered triazaphosphete complexes can be regarded as stabilized intermediates of the Staudinger reaction, which have not been previously isolated. All of the isolated products were characterized by NMR, IR spectroscopy, mass spectrometry, and by single‐crystal X‐ray diffraction analysis.
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