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Synthesis of butenolides as seed germination stimulants |
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| Authors: | Kingmo Sun |
| Affiliation: | DuPont Crop Protection, Stine/Haskell Research Center, PO Box 30, Bidg 300, Newark, DE 19714, USA |
| 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. |
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