42541-67-3Relevant academic research and scientific papers
Conversion of Torgov's synthesis of estrone into a highly enantioselective and efficient process
Yeung, Ying-Yeung,Chein, Rong-Jie,Corey
, p. 10346 - 10347 (2008/03/12)
A very direct and efficient conversion of the achiral Torgov diketone into the natural form of O-methyl estrone is described. Copyright
Configurations and Conformations of Some Methyl-Substituted 2,4-DioxabicycloNonanes
Mattinen, Jorma,Pihlaja, Kalevi,Czombos, Jozsef,Bartok, Mihaly
, p. 526 - 528 (2007/10/02)
Three dimethyl- and one trimethyl-2,4-dioxabicyclononanes were prepared and their configurations and conformations were determined by means of multinuclear high-field NMR spectroscopy.Even at 400 MHz the proton spectra were so degenerated that several 2D experiments and, also, deuterium NMR had to be used to make the spectral analysis possible. 13C and 17O NMR spectra are also reported.The information obtained shows that two of the dimethyl derivatives are in boat-chair conformations with 3α9syn and 3α6α configurations, whereas the third dimethyl and the trimethyl derivative exist in chair-chair conformations with 3β9syn and 3β9syn9anti configurations. Methyl substituted 2,4-dioxanonanes Multinuclear NMR Configurational and conformational analysis Preparation.
