The reactions of 3,4 dichloro nitrobenzene with phenolates were performed by means of microwave irradiation. In comparison with other methods, the present one has the advatage of good yield, short reaction time, and s...The reactions of 3,4 dichloro nitrobenzene with phenolates were performed by means of microwave irradiation. In comparison with other methods, the present one has the advatage of good yield, short reaction time, and simplicity in operation.展开更多
As a good antimicrobial active ingredient, 2,4,4′ trichloro 2′ hydroxydiphenyl ether has been already commercially available since 1970s. For this paper halogenated hydroxydiphenyl ethers were prepared and purifi...As a good antimicrobial active ingredient, 2,4,4′ trichloro 2′ hydroxydiphenyl ether has been already commercially available since 1970s. For this paper halogenated hydroxydiphenyl ethers were prepared and purified, and their analytical conditions by HPLC were studied. Further purification of 2,4,4′ trichloro 2′ hydroxydiphenyl ether was also studied. The adsorption ability of different decolourants, e.g. alumina and bentonite, for each component in crude product of 2,4,4′ trichloro 2′ hydroxydiphenyl ether was varied. 2,4,4′ trichloro 2′ hydroxydiphenyl ether might be adsorbed by active carbon. The colored impurities might be adsorbed by alumina. The colorless impurities might be adsorbed by bentonite.展开更多
The title compounds,C_(24)H_(32)Cl_2,N_2O_4(I)and C_(26)H_(32)BaCl_2N_4O_4S_2 (Ⅱ)have been synthesized and crystal structures determined. The crystallographic data are as follows: (I)M_r=483. 44,orthorhombic, space g...The title compounds,C_(24)H_(32)Cl_2,N_2O_4(I)and C_(26)H_(32)BaCl_2N_4O_4S_2 (Ⅱ)have been synthesized and crystal structures determined. The crystallographic data are as follows: (I)M_r=483. 44,orthorhombic, space group P2_12_12_1,a= 4. 852 (1), b= 11. 989(2), c=41. 231 (8) A, V=2398. 7(8) A ̄3, Z=4, μ(MoKa)=3. 07 cm ̄(-1), D_c=1. 338 g/cm ̄3, F(000)=960, R=0. 0678, R_w=0. 0514. (Ⅱ) M_r=736.93, monoclinic, space group P2_1/c, a=8. 801 (2), b=11. 653(9) , c=15. 756(6) A,β=105. 96(3)°, V=1553. 7(14) A ̄3, Z= 2, μ(MoKa)=16. 58 cm ̄(-1), D_c=1. 575 g/ cm ̄3, F(000)= 740. In compound Ⅱ, the Ba cation is coordinated by four oxygen atoms, two mitrogen atoms of diazo-18-crown-6 and two nitrogen atoms from SCN ̄- to form a distorted D_(6h) geometry with the Ba ̄(2+) at the center of crystallographic symmetry.展开更多
文摘The reactions of 3,4 dichloro nitrobenzene with phenolates were performed by means of microwave irradiation. In comparison with other methods, the present one has the advatage of good yield, short reaction time, and simplicity in operation.
文摘As a good antimicrobial active ingredient, 2,4,4′ trichloro 2′ hydroxydiphenyl ether has been already commercially available since 1970s. For this paper halogenated hydroxydiphenyl ethers were prepared and purified, and their analytical conditions by HPLC were studied. Further purification of 2,4,4′ trichloro 2′ hydroxydiphenyl ether was also studied. The adsorption ability of different decolourants, e.g. alumina and bentonite, for each component in crude product of 2,4,4′ trichloro 2′ hydroxydiphenyl ether was varied. 2,4,4′ trichloro 2′ hydroxydiphenyl ether might be adsorbed by active carbon. The colored impurities might be adsorbed by alumina. The colorless impurities might be adsorbed by bentonite.
文摘The title compounds,C_(24)H_(32)Cl_2,N_2O_4(I)and C_(26)H_(32)BaCl_2N_4O_4S_2 (Ⅱ)have been synthesized and crystal structures determined. The crystallographic data are as follows: (I)M_r=483. 44,orthorhombic, space group P2_12_12_1,a= 4. 852 (1), b= 11. 989(2), c=41. 231 (8) A, V=2398. 7(8) A ̄3, Z=4, μ(MoKa)=3. 07 cm ̄(-1), D_c=1. 338 g/cm ̄3, F(000)=960, R=0. 0678, R_w=0. 0514. (Ⅱ) M_r=736.93, monoclinic, space group P2_1/c, a=8. 801 (2), b=11. 653(9) , c=15. 756(6) A,β=105. 96(3)°, V=1553. 7(14) A ̄3, Z= 2, μ(MoKa)=16. 58 cm ̄(-1), D_c=1. 575 g/ cm ̄3, F(000)= 740. In compound Ⅱ, the Ba cation is coordinated by four oxygen atoms, two mitrogen atoms of diazo-18-crown-6 and two nitrogen atoms from SCN ̄- to form a distorted D_(6h) geometry with the Ba ̄(2+) at the center of crystallographic symmetry.