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The novel cyclic phosphate-phosphonatds, cis/trans-2-phosphonobenzyloxy-4-5, 5-dimethyl-1, 3. 2-dioxaphosphorinane 2-sulfides(selenides) (7a-f),were synthesized by a one-pot reaction using tris(diethylamino)phosphine activated by iodione as the phosphorylating and ring-closing reagent in good overall yields. The geometric stereoisomers were isolated and characterind A cisconfiguration and a chair preferred conformation of -one isomer of 7b were established ty X-ray diffraction analysis.
The novel cyclic phosphate-phosphonates, cis / trans-2-phosphonobenzyloxy-4-5, 5-dimethyl- 1, 3.2- dioxaphosphorinane 2-sulfides (selenides) (7a-f), were synthesized by a one-pot reaction using tris (diethylamino) phosphine activated by iodione as the phosphorylating and ring-closing reagent in good overall yields. The geometric stereoisomers were isolated and characterind A cisconfiguration and a chair preferred conformation of -one isomer of 7b were established ty X-ray diffraction analysis .