Author/Authors :
Sun، نويسنده , , Kingmo and Chen، نويسنده , , Yuzhong and Wagerle، نويسنده , , Ty and Linnstaedt، نويسنده , , David R. Currie، نويسنده , , Martin and Chmura، نويسنده , , Preston and Song، نويسنده , , Ying and Xu، نويسنده , , Ming، نويسنده ,
Abstract :
Syntheses of a series of novel butenolides as seed germination stimulants are described. The key steps include the cyclization reaction of enamine 4 to form a pyran ring, the efficient halogenating reaction and the selective lithiation reaction of butenolides.
