摘要:
The present invention relates to bicyclic tetrahydrofuran lactone derivatives of Formula (1) and a preparation method thereof, and particularly it relates to a process of preparing compounds of Formula (1) by performing an intramolecular cyclization of tetrahydrofuran-allenic acid derivatives in the presence of a phenyl halide, a palladium catalyst and a base: wherein n is 1 or 2, and R is phenyl optionally substituted with C1-C6 alkyl, C1-C6 alkoxy, hydroxyl or C1-C6 hydroxyalkyl group.
摘要:
The present invention relates to bicyclic tetrahydrofuran derivatives of Formula (1) and a preparation method thereof, and particularly it relates to a process of preparing compounds of Formula (1) by performing an intramolecular cyclization of tetrahydrofuran-allenol derivatives in the presence of alcohol compound, transitional metal catalyst and carbon monoxide: wherein n is 1 or 2; R is phenyl optionally substituted with C1-C6 alkyl, C1-C6 alkoxy, hydroxyl or C1-C6 hydroxyalkyl group; and R1 is C1-C6 alkyl group.
摘要:
The present invention relates to bicyclic tetrahydrofuran lactone derivatives of Formula (1) and a preparation method thereof, and particularly it relates to a process of preparing compounds of Formula (1) by performing an intramolecular cyclization of tetrahydrofuran-allenic acid derivatives in the presence of a phenyl halide, a palladium catalyst and a base: wherein n is 1 or 2, and R is phenyl optionally substituted with C1–C6 alkyl, C1–C6 alkoxy, hydroxyl or C1–C6 hydroxyalkyl group.
摘要:
A liquid crystal display device and a method for manufacturing the same are disclosed which are capable of preventing occurrence of contact errors between pads of gate or data lines and pad electrodes. The liquid crystal display device includes a signal line and a signal line pad arranged in one direction, an insulating film formed on the signal line and the signal line pad, the insulating film including at least one contact hole, through which a predetermined portion of the signal line pad is exposed, and a pad electrode formed on the insulating film, and electrically connected with the signal line pad via the at least one contact hole. The insulating film includes inner side walls defining the at least one contact hole, and at least one of the inner side walls has a slope gentler than a slope of the remaining inner side walls.
摘要:
The present invention relates to bicyclic tetrahydrofuran derivatives of Formula (1) and a preparation method thereof, and particularly it relates to a process of preparing compounds of Formula (1) by performing an intramolecular cyclization of tetrahydrofuran-allenol derivatives in the presence of alcohol compound, transitional metal catalyst and carbon monoxide: wherein n is 1 or 2; R is phenyl optionally substituted with C1-C6 alkyl, C1-C6 alkoxy, hydroxyl or C1-C6 hydroxyalkyl group; and R1 is C1-C6 alkyl group.
摘要:
A liquid crystal display panel according to an embodiment of the present invention includes a first shorting bar inspecting a signal line in a non-display area of a first substrate; a second shorting bar inspecting the signal line in the non-display area of the inspected first substrate attached to a second substrate; a first shorting line connected to at least one of the signal lines and the first and second shorting bars; and a second shorting line connected the second shorting bar with the remaining signal line except the signal line connected to the first shorting line.