东林
College of Science
Disparlure:sex attractant of the female moth.(A type of pheromone.) (7RS,8SR)-7,8-epoxy-2-methyloctadecane 2 H 雌舞毒蛾引诱剂 环氧十九烷
College of Science 雌舞毒蛾引诱剂 环氧十九烷 Disparlure: sex attractant of the female gypsy moth.(A type of pheromone.) (7RS,8SR)-7,8-epoxy-2-methyloctadecane
洋艾/蒿属植物 "santolinatriene" constituent of Artemesia pheromone of California red scale source of absinthe and wormwood Aonidiella aurantii 苦艾酒 柑桔红圆蚧 苦艾
College of Science 洋艾//蒿属植物 苦艾酒 苦艾 柑桔红圆蚧
Section H Alkenes and Alkyne ■Preparation ■Properties ■Reactions of alkenes Electrophilic addition to symmetrical alkenes addition to unsymmetrical alkenes Carbocation stabilization Reduction and oxidation of alkenes .Hydroboration of alkenes ■Reactions of alkynes Electrophilic additions to alkynes ●Reduction of alkynes Special reactions of terminal alkynes ■Conjugated dienes
College Section H Alkenes and Alkynesof Science Preparation Properties Reactions of alkenes zElectrophilic addition to symmetrical alkenes zaddition to unsymmetrical alkenes zCarbocation stabilization zReduction and oxidation of alkenes zHydroboration of alkenes Reactions of alkynes zElectrophilic additions to alkynes zReduction of alkynes zSpecial reactions of terminal alkynes Conjugated dienes
H1 Preparation of alkenes and alkynes Alkenes can be synthesized 1.by the reduction of alkynes,or 2.by the elimination of alkyl halides and alcohols. 3.Vicinal dibromides can be debrominated by treatment with zinc dust in acetic acid or with sodium iodide in acetone. Zn/HOAc or Nal,acetone Fig.1.Synthesis of an alkene from a vicinal dibromide
College H1 Preparation of alkenes of Science and alkynes Alkenes can be synthesized 1.by the reduction of alkynes, or 2.by the elimination of alkyl halides and alcohols. 3.Vicinal dibromides can be debrominated by treatment with zinc dust in acetic acid or with sodium iodide in acetone