Cd. Reddy et al., SYNTHESIS, H-1, C-13, P-31 NMR ANALYSIS, AND INSECTICIDAL ACTIVITY OFMEMBERS CONTAINING EXTERNAL P-O OR P-N BONDS IN 10-DICHLORO-12H-DIBENZO[D,G][1,3,2]DIOXAPHOSPHOCIN 6-OXIDES, Phosphorus, sulfur and silicon and the related elements, 81(1-4), 1993, pp. 61-71
The synthesis of novel 10-dichloro-12H-dibenzo[d,g][1,3,2]dioxaphospho
cin 6-oxides is described along with IR, H-1, C-13, and P-31 NMR spect
ral data. Phosphorus couplings of 5J(PH), 2J(POC) and 3J(POCC) were de
termined. An appraisal of the data in total did not allow unequivocal
differentiation between a boat-boat, boat-chair, distorted boat. or tw
ist boat conformation for the eight-membered ring of the dioxaphosphoc
in 6-oxides. A few members of this family were evaluated for toxicity
in the insect P. americana.