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以吡咯和间羟基苯甲醛为原料缩合成环得 m- THPP,经水合肼还原得 m- THPBC,再经邻 -四氯苯醌氧化得光敏剂 m - THPC。
Using pyrrole and m - hydroxybenzaldehyde as starting materials, the m - THPP was condensed into ring and m - THPBC was reduced by hydrazine hydrate, and the photosensitizer m - THPC was oxidized by o - tetrachlorobenzoquinone.