编辑“︁SPANphos”︁

{{chembox
| verifiedrevid = 409102763
| IUPACName = 4,4,4',4',6,6'-Hexamethyl-2,2'-spirobichroman-8,8'-diylbis(diphenylphosphane)
|   ImageFile = SPANphos.svg
| Section1 = {{Chembox Properties
|   Formula = C<sub>47</sub>H<sub>46</sub>O<sub>2</sub>P<sub>2</sub>
|   MolarMass = 704.814
  }}
}}

'''SPANphos'''是[[有机金属化学]]和[[配位化学]]中的[[有机膦]][[配体]]。SPANphos可形成[[跨對位配體]]。

==合成==

该C<sub>2</sub>-反式对称-[[二膦|二膦配体]]是一种由廉价试剂合成的化合物。首先通过酸催化下，[[对甲酚]]与[[丙酮]]合成出4,4,4',4',6,6'-六甲基-2,2'-螺双苯并二氢吡喃。然后用[[N-溴代丁二醯亞胺|NBS]]溴化螺烷得到二溴物，继而和[[正丁基锂]]甲基化得到二锂化衍生物。最后用{{le|氯代二苯基膦|Chlorodiphenylphosphine}}处理得到的二锂化衍生物完成合成。<ref>{{cite journal | author = Z. Freixa, M. S. Beentjes, G. D. Batema, C. B. Dieleman, G. P. F. v. Strijdonck, J. N. H. Reek, P. C. J. Kamer, J. Fraanje, K. Goubitz and P. W. N. M. Van Leeuwen | title = SPANphos: A ''C''<sub>2</sub>-Symmetric ''trans''-Coordinating Diphosphane Ligand | journal = [[Angewandte Chemie]] | year = 2003 | volume = 42 | issue = 11 | pages = 1322–1325 |doi = 10.1002/anie.200390330 | pmid = 12645065 }}</ref>

:[[Image:Synthesis of SPANphos.png|500px]]

==参考文献==
<references/>

[[Category:二膦烷]]
[[Category:二苯基膦基化合物]]