Abstract: The present disclosure discloses an assembly-and-disassembly structure for a toilet cover, which comprises a cover plate assembly, two support bases, and two rotation shafts. A torsion spring is disposed between the first locking rod and the second locking rod. A first end of the torsion spring is movably connected to the first locking rod, and a second end of the torsion spring is connected to the second locking rod. The second locking rod comprises a torsion spring fixing portion. An outer end of the first locking rod comprises a first locking plate, and an inner end of the first locking rod comprises a sliding groove structure configured to receive the first end of the torsion spring to move.

Abstract: The present disclosure discloses an assembly-and-disassembly structure for a toilet cover, which comprises a cover plate assembly, two support bases, and two rotation shafts. A torsion spring is disposed between the first locking rod and the second locking rod. A first end of the torsion spring is movably connected to the first locking rod, and a second end of the torsion spring is connected to the second locking rod. The second locking rod comprises a torsion spring fixing portion. An outer end of the first locking rod comprises a first locking plate, and an inner end of the first locking rod comprises a sliding groove structure configured to receive the first end of the torsion spring to move.

Abstract: A novel process for the preparation of a fluorolactone derivative of the formula and of its acylated derivative of formula wherein R1 stands for a hydroxy protecting group is described. The acylated fluor lactones of formula V, particularly the benzoyl derivative with R1=benzyl are important precursors for the synthesis of prodrug compounds which have the potential to be potent inhibitors of the Hepatitis C Virus (HCV) NS5B polymerase.

Abstract: A novel process for the preparation of a fluorolactone derivative of the formula and of its acylated derivative of formula wherein R1 stands for a hydroxy protecting group is described. The acylated fluor lactones of formula V, particularly the benzoyl derivative with R1=benzyl are important precursors for the synthesis of prodrug compounds which have the potential to be potent inhibitors of the Hepatitis C Virus (HCV) NS5B polymerase.

Abstract: A novel process for the preparation of a fluorolactone derivative of the formula and of its acylated derivative of formula wherein R1 stands for a hydroxy protecting group is described. The acylated fluorolactones of formula V, particularly the benzoyl derivative with R1=benzyl are important precursors for the synthesis of prodrug compounds which have the potential to be potent inhibitors of the Hepatitis C Virus (HCV) NS5B polymerase.

Abstract: A novel process for the preparation of a fluorolactone derivative of the formula and of its acylated derivative of formula wherein R1 stands for a hydroxy protecting group is described. The acylated fluorolactones of formula V, particularly the benzoyl derivative with R1=benzyl are important precursors for the synthesis of prodrug compounds which have the potential to be potent inhibitors of the Hepatitis C Virus (HCV) NS5B polymerase.

Abstract: Method of synthesizing a compound of formula (I), wherein R1, R2 are, independently, chloro or fluoro, and wherein R3 is H, alkyl, aralkyl or is an alkylether or alkylthioether comprising the steps of firstly reducing a diazeny compound of formula (II) non-catalytically or with a catalytic amount of an homogenous organic, non-metal catalyst to the corresponding hydrazo compound of formula (III) and in a second step catalytically hydrogenating said hydrazo compound in with a heterogeneous Ni-catalyst to the compound of formula (I).

Abstract: Method of synthesizing a compound of formula (I), wherein R1, R2 are, independently, chloro or fluoro, and wherein R3 is H, alkyl, aralkyl or is an alkylether or alkylthioether comprising the steps of firstly reducing a diazeny compound of formula (II) non-catalytically or with a catalytic amount of an homogenous organic, non-metal catalyst to the corresponding hydrazo compound of formula (III) and in a second step catalytically hydrogenating said hydrazo compound in with a heterogeneous Ni-catalyst to the compound of formula (I).

Abstract: Method of synthesizing a compound of formula (I), wherein R1, R2 are, independently, chloro or fluoro, and wherein R3 is H, alkyl, aralkyl or is an alkylether or alkylthioether comprising the steps of firstly reducing a diazeny compound of formula (II) non-catalytically or with a catalytic amount of an homogenous organic, non-metal catalyst to the corresponding hydrazo compound of formula (III) and in a second step catalytically hydrogenating said hydrazo compound in with a heterogeneous Ni-catalyst to the compound of formula (I).

Abstract: The present invention relates to a process for the preparation of a compound of formula wherein R1 is selected from C1-6-alkyl, C3-6-cycloalkyl and aralkyl, and wherein R2 at each occurrence independently is halogen or C1-6-alkyl, and m is an integer from 0 to 4, Q is selected from halogen, —NO2 and —NR3R4, wherein R3 and R4 are independently selected from hydrogen, C1-6-alkyl, C3-6-cycloalkyl, aryl, aralkyl, mesyl and tosyl, or wherein R3 and R4 together form a C4-6-alkylene group, Y at each occurrence is hydrogen or a hydroxy protection group W that can be hydrolytically cleaved under acidic conditions, and n is an integer from 1 to 3, and n is an integer from 1 to 3, with the proviso that n and m together are not greater than 5.