Chlororphyrins Lab Report
The German organic chemist Hans Fischer (1881-1945) was awarded the Nobel Prize for chemistry in 1930 for his researches into the constitution of hemin and chlorophyll and especially for his synthesis of hemin.
Hans Fischer, the son of Dr. Eugen Fischer, a manufacturer of chemicals, was born at Höchst am Main, on July 27, 1881. He entered the University of Lausanne in 1899, read chemistry and medicine, and subsequently transferred to the University of Marburg, where he graduated in chemistry in 1904. Two years later he qualified in medicine at Munich. In 1908 he graduated as a doctor of medicine at Munich. He was assistant to the chemist Emil Fischer at Berlin (1908-1910) and did some early work on bile pigments at Munich (1910-1912).
After …show more content…
During his career he wrote nearly 130 papers on that subject. Richard Willstätter had shown about 1912 that plants contain two chlorophylls: chlorophyll a and chlorophyll b. From chlorophyll he obtained three different porphyrins, and from these etioporphyrin, which he considered identical with the etioporphyrin obtained from hemoglobin. Fischer started his researches here, and from the three porphyrins he obtained two distinct etioporphyrins. He synthesized very many isomers, and he converted pyroporphyrin into his mesoporphyrin IX. He then worked on the substance phylloerythrin, found in the gastrointestinal tract of ruminants. He showed that it is a porphyrin and that it exhibited an atypical linkage of two of the pyrrole nuclei. It was known that chlorophyll contains magnesium, and Fischer determined that the magnesium atom was situated at the center of the porphin …show more content…
This formula is notable not only for the atypical linkage of two of the pyrrole nuclei, but also for the presence of two surplus hydrogen atoms in 7-and 8-positions, and of a very complex phytyl group in the 7-position. He found that the formula for chlorophyll b is the same as that for chlorophyll a, except that in the former a formyl group replaces the methyl group in pyrrole ring II of the
Hans Fischer, the son of Dr. Eugen Fischer, a manufacturer of chemicals, was born at Höchst am Main, on July 27, 1881. He entered the University of Lausanne in 1899, read chemistry and medicine, and subsequently transferred to the University of Marburg, where he graduated in chemistry in 1904. Two years later he qualified in medicine at Munich. In 1908 he graduated as a doctor of medicine at Munich. He was assistant to the chemist Emil Fischer at Berlin (1908-1910) and did some early work on bile pigments at Munich (1910-1912).
After …show more content…
During his career he wrote nearly 130 papers on that subject. Richard Willstätter had shown about 1912 that plants contain two chlorophylls: chlorophyll a and chlorophyll b. From chlorophyll he obtained three different porphyrins, and from these etioporphyrin, which he considered identical with the etioporphyrin obtained from hemoglobin. Fischer started his researches here, and from the three porphyrins he obtained two distinct etioporphyrins. He synthesized very many isomers, and he converted pyroporphyrin into his mesoporphyrin IX. He then worked on the substance phylloerythrin, found in the gastrointestinal tract of ruminants. He showed that it is a porphyrin and that it exhibited an atypical linkage of two of the pyrrole nuclei. It was known that chlorophyll contains magnesium, and Fischer determined that the magnesium atom was situated at the center of the porphin …show more content…
This formula is notable not only for the atypical linkage of two of the pyrrole nuclei, but also for the presence of two surplus hydrogen atoms in 7-and 8-positions, and of a very complex phytyl group in the 7-position. He found that the formula for chlorophyll b is the same as that for chlorophyll a, except that in the former a formyl group replaces the methyl group in pyrrole ring II of the