The title compound (C22H27NO3) was obtained by the reaction of 4-methylbenzal- dehyde, dimedone, ethyl acetoacetate and ammonium acetate in water in the presence of triethyl- benzylammonium chloride (TEBA). The crysta...The title compound (C22H27NO3) was obtained by the reaction of 4-methylbenzal- dehyde, dimedone, ethyl acetoacetate and ammonium acetate in water in the presence of triethyl- benzylammonium chloride (TEBA). The crystal is of orthorhombic, space group Pbcn with a = 18.242(2), b = 15.651(1), c = 14.207(2) ?, V = 4056.15(64) ?3, Mr = 353.45, Z = 8, Dc = 1.158 g/cm3, μ = 0.076, λ(MoKα) = 0.71073 ? and F(000) = 1520. The final R = 0.0453 and wR = 0.0436 for 1156 observed reflections with I > 2σ(I). X-ray analysis revealed that the pyridine ring is of boat conformation and the six-member ring fused with it adopts half-chair conformation.展开更多
Strengthening the management of agricultural ecological environment is an important link of Chinas rural revitalization strategy. In the report of the 19th National Congress of the Communist Party of China, it is prop...Strengthening the management of agricultural ecological environment is an important link of Chinas rural revitalization strategy. In the report of the 19th National Congress of the Communist Party of China, it is proposed to implement the strategy of rural revitalization, adhere to the principle of co-governance by the whole people, carry out actions to rectify rural human settlements, and focus on solving rural ecological environment problems. In 2021, No.1 document of the Central Committee once again focused on "agriculture, rural areas and farmers", raised the rural revitalization strategy to a new height, and put forward a five-year action plan for improving rural human settlements. Under the background of implementing the strategy of rural revitalization in an all-round way, it is necessary to solve the deep-seated obstacles that restrict rural ecological environment governance in order to improve rural living environment and realize the modernization of agricultural ecological environment governance system and governance capacity.展开更多
基金This work was supported by the foundation of "Innovation Project" of Xuzhou Normal University
文摘The title compound (C22H27NO3) was obtained by the reaction of 4-methylbenzal- dehyde, dimedone, ethyl acetoacetate and ammonium acetate in water in the presence of triethyl- benzylammonium chloride (TEBA). The crystal is of orthorhombic, space group Pbcn with a = 18.242(2), b = 15.651(1), c = 14.207(2) ?, V = 4056.15(64) ?3, Mr = 353.45, Z = 8, Dc = 1.158 g/cm3, μ = 0.076, λ(MoKα) = 0.71073 ? and F(000) = 1520. The final R = 0.0453 and wR = 0.0436 for 1156 observed reflections with I > 2σ(I). X-ray analysis revealed that the pyridine ring is of boat conformation and the six-member ring fused with it adopts half-chair conformation.
文摘Strengthening the management of agricultural ecological environment is an important link of Chinas rural revitalization strategy. In the report of the 19th National Congress of the Communist Party of China, it is proposed to implement the strategy of rural revitalization, adhere to the principle of co-governance by the whole people, carry out actions to rectify rural human settlements, and focus on solving rural ecological environment problems. In 2021, No.1 document of the Central Committee once again focused on "agriculture, rural areas and farmers", raised the rural revitalization strategy to a new height, and put forward a five-year action plan for improving rural human settlements. Under the background of implementing the strategy of rural revitalization in an all-round way, it is necessary to solve the deep-seated obstacles that restrict rural ecological environment governance in order to improve rural living environment and realize the modernization of agricultural ecological environment governance system and governance capacity.
