1.写出下列化合物在pH为2.7-12的水溶液中的离子式 (1)异亮氨酸 (2)天门冬氨酸 (3)赖氨酸 (4)甘甘 (5)赖-甘 (6)丙天门冬缬 (2.预测下列a-氨基酸的等电点范围:

Chapter 12 Molecular Rearrangements I Classification of Rearrangement Reactions II Nucleophilic Rearrangement 1 Wagner-Meerwein rearrangement 2 Pinacolic Rearrangement 3a- ethandione Rearrangement 4 Beckmann Rearrangement 5 Baeyer-Villiger- Rearrangement Electrophilic Rearrangement) 1 favorskii Rearrangement 2 Stevens Rearrangement 3 Wittig Rearrangement 4 Fries Rearrangement IV Radical Rearrangement

he term \organic\ appears to have been used for the first time about 1777 and was applied to those materials occurring in or derived from living organisms. Accordingly, such substances as starch, alcohol, and urea were classified as organic. for starch is produced by living plants, alcohol is a product of fermentation caused by