1: in tetrahydrofuran T=0°C; 5.5 h; 2: With sodium tetrahydroborate in tetrahydrofuran; methanol T=20°C; 16 h; 3: With water in tetrahydrofuran; methanol; chloroform pH=1;
参考文献
Boehringer Ingelheim International GmbH
Patent: US2006/116370 A1, 2006 ;
Location in patent: Page/Page column 6 ;