NEW DERIVATIVES OF 4,5-BENZO-1,3,2-OXAZA (OR D1AZA)-PHOSPHOLANE FROM CONVENIENT CONDENSATION OF SUBSTITUTED UREA WITH TRIS(DIALKYLAMINO)PHOSPHINE |
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| Authors: | Xiao-Bo Ma Jing-Lin Zhang |
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| Institution: | 1. Institute of Chemistry, Academia Sinica , Beijing, China;2. Institute of Organic Synthesis, Huazhong Normal University , Wuhan, Hubei, China |
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| Abstract: | Abstract The condensation of N-phenyl-N′-(2-hydroxylphenyl)urea or N-phenyl-N′-(2-aminophenyl)urea with tris(dia1kylamino)phosphine afforded derivatives of 4,5-benzo-1,3,2-oxaza (or diaza)-phospholane which formed intramolecular hydrogen bond. The cleavage of the amide bond to give N,N-dialky1-N′-phenylurea together with polymers of 1,3,2-benzodiazaphosphole was observed in the latter reaction. |
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| Keywords: | Condensation reaction 1 3 2-benzoxazaphospholane 1 3 2-benzodiazaphospholane intramolecular hydrogen bond urea derivatives 4-bond P-H coupling constants |
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