Novel Synthesis, Crystal Structure and Herbicidal Activity of （3R,4R）-4,7,7-Trimethyl-6- oxabicyclo[3.2.1]octane-3, 4-diol

The title compound, (3R,4R)-4,7,7-trimethyl-6-oxabicyclo[3.2.1]octane-3,4-diol (C10H18O3), has been synthesized by using one-step catalytic synthetic method from α-pinene and structurally characterized by means of IR, H-NMR, C-NMR, HRMS and single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group P21/n with a = 7.277(4), b = 18.177(11), c = 7.939(5) A, β = 91.122(8)°, Z = 4, V = 1049.9(11) A, Dc = 1.178 g/cm, Mr = 186.24, λ(MoKα) = 0.71073 A, μ = 0.09 mm, F(000) = 408, R = 0.051 and wR = 0.144. The title complex molecules contained two hydroxyls and are connected through hydrogen bonds to generate a two-dimensional network. Especially, the preliminary herbicidal activity results show that the title compound exhibits herbicidal activity against rape (Brassica campestris) and barnyard grass (Echinochloa crusgalli).