1: With trimethylacetic anhydride in acetone 0.5 h; 2: With tris(4-methylphenyl)-phosphine; palladium diacetate in tetrahydrofuran; acetone Sonication; 3: With hydrogen in tetrahydrofuran; acetone T=80°C; P=38787.1 Torr; 24 h;
参考文献
Prakash, Indra; Augustine, Robert L.; Tanielyan, Setrak K.
Patent: US2004/210094 A1, 2004 ;
Location in patent: Page 2 ;