1955
DOI: 10.1002/cber.19550880827
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Studien in der Vitamin D‐Reihe, X1): Partialsynthesen von Tachysterin‐Analoga

Abstract: Nr.8/1955] Inhoffen, Weissermel, Quinkert, Irmscher 1321-211: 0.7 g, &her/Benzol = 311 : 0.7 g, Ather: 3.6 g, Ather/Methanol (bis 7%): 4.0 g. Insgesamt: 20.1 g.Siimtliche Fraktionen, mit Ausnahme der benzolischen, wurden vereinigt und i. oak. destilliert. Das D i o l X I I ging bei 10-2Ton zwischen 130-1360als hochvisooees, nahezu farbloses 61 iiber; Ausb. 7.2 g (34% d. Th.). UV-Absorption hmax 229-230 mp, ~= 1 3 2 5 0 (Methanol). Zerewitinoff-Bestimmung: Einwaage 63.7 mg; Bor. 9.7, Gef. 9.9 ccm Methan (unkorr… Show more

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“…Gerhard Quinkert (Figure 13) received his Ph.D. with Hans Herloff Inhoffen at the Technical University of Braunschweig in 1955 where he studied the chemistry of vitamin D. Quinkert's first papers in the early 1950s were on the overirradiation products in the vitamin D series [145][146][147][148][149] , and his last paper in the field was in 1959. [150] Thus, Havinga and Schlatmann's 1961 paper [8] attempting to explain many of the secondary products in the photochemistry and thermal chemistry of the vitamin D compounds -the paper containing Oosterhoff's orbital symmetry suggestion -likely was familiar to Quinkert.…”
Section: General Background Informationmentioning
confidence: 99%
“…Gerhard Quinkert (Figure 13) received his Ph.D. with Hans Herloff Inhoffen at the Technical University of Braunschweig in 1955 where he studied the chemistry of vitamin D. Quinkert's first papers in the early 1950s were on the overirradiation products in the vitamin D series [145][146][147][148][149] , and his last paper in the field was in 1959. [150] Thus, Havinga and Schlatmann's 1961 paper [8] attempting to explain many of the secondary products in the photochemistry and thermal chemistry of the vitamin D compounds -the paper containing Oosterhoff's orbital symmetry suggestion -likely was familiar to Quinkert.…”
Section: General Background Informationmentioning
confidence: 99%