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5,5-Dimethyl-2-methyl-seleno-1,3,2-dioxaphospho-rinan-2-one.

ABSTRACT: The title compound, C(6)H(13)O(3)PSe, was obtained in the reaction of 5,5-dimethyl-2-oxo-2-seleno-1,3,2-dioxaphospho-r-inane potassium salt with methyl iodide. The seleno-methyl group is in the axial position in relation to the six-membered dioxaphospho-rinane ring.

SUBMITTER: Cholewinski G

PROVIDER: S-EPMC2984009 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:The title compound, C(15)H(17)O(6)P, was obtained from a reaction of 4-methyl-7-hy-droxy-coumarin and 2-chloro-5,5-dimethyl-1,3,2-dioxaphosphinane 2-oxide. There are two mol-ecules in the asymmetric unit in which the benzopyran ring system is almost planar [r.m.s. deviation for each molecule = 0.003?Å]. In the crystal, C-H?O hydrogen bonds and ?-? stacking inter-actions [with centroid-centroid distances of 3.743?(3) and 3.727?(3)?Å] link the two mol-ecules. The dioxaphospho-rinane ring adopts a chair conformation in both asymmetric molecules.

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