ISSN:
0947-3440
Keywords:
Diphosphanes
;
Hetero Cope rearrangement
;
Cuprous chloride
;
Alkynylphosphanes
;
Low-coordinated phosphorus compounds
;
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Coupling of alkynyl(2,4,6-tri-tert-butylphenyl)phosphanes 2 with n-butyllithium and cuprous chloride gives 3,4-diphospha-1,5-hexadiynes 3 or cuprous chloride complexes 8 of 3,4-bis(phosphinidene)cyclobutenes 5, depending on the bulkiness of the substituent at the triple bond. The exclusive formation of racemic 3,4-diphospha-1,5-hexadiynes 3, which was proven by 31P- and 13C-NMR spectroscopy, explains the stereoselective rearrangement to only symmetrical cyclobutenes 5.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.199619961216
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