pyrone

Efficacy of an α - pyrone 0.2 % wettable powder against plant fungal pathogens

0.2%α-吡喃酮WP对植物病原真菌的防治效果

The isolation and identification of a new α - pyrone from Opuntia dillenii

仙人掌中一个新α-吡喃酮成分的分离与结构鉴定

Effect of Chemical Hybridizing Agent ⅲ ( Pyrone type Derivative ) on Male Sterility in Rice

化学杀雄剂Ⅲ号（吡喃酮类复配剂）诱导水稻雄性不育的效果

The active ingredient of α - pyrone 0.2 % wettable powder is 5,6-dihydro-6-pentyl-2H-pyran-2-one .

0.2%α-吡喃酮WP的有效成分为5,6-二氢-6-戊基-2H-吡喃-2-酮（5,6-dihydro-6-pentyl-2H-pyran-2-one）。

The syntheses of two new derivatives of 4 - pyrone , by the reaction of adipyl choloride with enamines deriving from chain ketones and aldehydes , are described .

本文由链状醛酮的烯胺与己二酰氯反应合成两个新的4－吡喃酮衍生物。

With β - naphthol as starting material , 2-hydroxy-1-naphthalene carbonal was first synthesized through Reimer-Tiemann reaction . Then in the presence of catalyst , fluorescent whitening agent 3-phenyl-5,6-benzo - α - pyrone was synthesized with the resultant product and phenylacetic acid through condensation .

采用β-萘酚为基本原料，经Reimer-Tiemann反应合成了2-羟基-1-萘甲醛，在催化剂存在下进一步与苯乙酸进行缩合反应合成香豆素类荧光增白剂3-苯基-5,6-苯并α-吡喃酮。