1: in tetrahydrofuran; hexane; water T=-65 - -5°C; 2 h; Cooling with acetone-dry ice; 2: With ammonium chloride in tetrahydrofuran; hexane; water T=-60 - -50°C;
参考文献
Hormann, Robert Eugene; Tice, Colin M.; Chortyk, Orestes; Smith, Howard; Meteyer, Thomas
Patent: US2005/209283 A1, 2005 ;
Location in patent: Page/Page column 25; 26 ;
