1,3-Diphenylpropane-1,3-diamines XI. Conversion of a 3-hydroxy-1,3-diphenylpropan-1-one to 1,3-diphenylpropane-1,3-diamines
Autor: | Wolfgang Wiegrebe, A. Kaiser, P. Bielmeier |
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Rok vydání: | 1997 |
Předmět: | |
Zdroj: | Monatshefte f�r Chemie Chemical Monthly. 128:1247-1254 |
ISSN: | 1434-4475 0026-9247 |
Popis: | Highly diastereoselective BH3/THF syn-reduction of the 3-hydroxy-1,3-diphenylpropan-1-one/BBr3 complex3/BBr3 (cf.Sarko) afforded themeso-diol4, whereas racemate5 was obtained by BH3/THF reduction without complexation. Mesylation, exchange of mesylate by azide, and reduction with SnCl2/thiophenol led to the diamines10 and11 which were also produced by reductive N-N cleavage of the 4,5-dihydropyrazole13. |
Databáze: | OpenAIRE |
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