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- W2379536730 abstract "Protoporhyrin(Ⅱ) was prepared by the demetalation reaction of hemin using HCOOH-Fe powder.And the target product of[2,7,12,18-tetramethyl-3,8-bis(1-hydroxy ethyl)-13,17-dicarboxy ethyl]-porphyrin(hematoporphyrin) was prepared through the one pot reaction of an HBr-acetic acid addition reaction and an OH-nucleophilic substitution reaction from protoporphyrin without purifying the intermediate.The total yield of hematoporphyrin(Ⅲ) is 90.6%.The effects of temperature,time and the dosage of reducing agent to Ⅱ and the effect of pH and time on the yield of Ⅲ were investigated.The results show that the yield of Ⅱ reaches a maximum of 98.3% in the molar ratio of hemin to Fe powder 1∶ 1 and at the the temperature of 110 ℃ and the optimal reaction pH and reaction time are 10 and 6 h respectively with a maximum yield of 92.1% in the synthesis of product Ⅲ.The target products were characterized with FT-IR,ESI-MS and 1HNMR." @default.
- W2379536730 created "2016-06-24" @default.
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- W2379536730 date "2011-01-01" @default.
- W2379536730 modified "2023-09-26" @default.
- W2379536730 title "A Modified Synthesis of [2,7,12,18-Tetramethyl-3,8-bis(1-hydroxy ethyl)-13,17-dicarboxy ethyl]-porphyrin" @default.
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