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7-[(5,5-Dimethyl-2-oxido-1,3,2-dioxaphosphinan-2-yl)-oxy]-4-methyl-2H-chromen-2-one.

ABSTRACT: 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.

SUBMITTER: Zhao YR 

PROVIDER: S-EPMC3379479 | biostudies-literature | 2012 Jun

REPOSITORIES: biostudies-literature

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7-[(5,5-Dimethyl-2-oxido-1,3,2-dioxaphosphinan-2-yl)-oxy]-4-methyl-2H-chromen-2-one.

Zhao Yan-Ru YR   Hou Xu-Feng XF   Xu Zhi-Hong ZH  

Acta crystallographica. Section E, Structure reports online 20120531 Pt 6

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 π-π 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  ...[more]

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