ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
9,10-Phenanthrenequinone monoimine (1c) or 3,5-di-tert-butyl-o-benzoquinone (2a) in the presence of ammonia undergo cycloaddition with triphenylphosphane to give 2,3-dihydro-1,3,2λ5-benzoxazaphospholes (3) in good yields. 5,7-Di-tert-butyl-2,3-dihydro-2,2,2-triphenyl-1,3,2λ5-benzoxazaphosphole (3a) shows a tautomeric equilibrium with the iminophosphorane 4a while 2,3-dihydro-2,2,2-triphenylphenanthro[9,10-d]-1,3,2λ5-oxazaphosphole (3c) has a cyclic structure in solution. Both compounds are cyclic in the solid form as confirmed by X-ray structure diffraction studies.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19881210923
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