ISSN:
0009-2940
Keywords:
Iminophosphanes
;
Azadiphosphiridine imines
;
Phosphanes, imino-
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Iminophosphanes and Azadiphosphiridine IminesA variety of bis(alkyl)iminophosphanes R - P=N - R' 3a - e (R = CMe2Et, CMeEt2, CEt3; R' = CMe3, CEt3) and arylimine-substitued derivatives [R' = 2,4,6-tBu3C6H2, R = CEt3 (3f), R = PhCH=CH (3g)] are obtained by base-induced dehydrochlorination from the corresponding amino(chloro)phosphanes R - P(Cl) - N(H)R' 2a - g. Depending on the steric demand of the substituents, the iminophosphanes 3a - d undergo a reversible [2 + 1] cyclodimerization to give the azadiphosphiridine imines R - P(=NR') - P(R) - N - R' 4a - d. The same ring system is obtained in the reaction of 3c with the (arylimino)-phosphanes R - P=N - aryl (R = PhCH=CH, Et, Me). However, this cycloaddition results in the formation of diastereomers 4e - g and 4'e - g, respectively. The reaction of Et - P=N - aryl with R - P=N - aryl (R = PhCH=CH, Cl) furnishes (phosphanylamino)iminophosphanes Et(R)P - N(aryl) - P=Naryl 5a, b. The compounds 3f, 4e, f, and 5a have been characterized by X-ray structure analyses.
Additional Material:
4 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19931261005
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