ThepKavalues (theoretical and computed) of the macrocyclicglycopeptideionizable groups, namelycarboxylic acids, amines (primary and secondary), and phenolic groups are reported inTable 2. The experimentalisoelectric points, obtained byelectrophoretic mobility, are also reported.17Considering the number of ...
Amino Acids12Special Nitrogen Compounds28 Peptides13Hydroxylamines28 Nitrogen Compounds14Hydrazines28 Aliphatic amines15, 17, 19Semicarbazones28 Cyanoamines16Amidoximes28 Anilines17, 18, 20Thiols29 Nucleosides21Carbon Acids30,31 Special Table Heterocycles22Indicators31 Acridine23References32-34 Benzo...
Sizable deviations in reported pka values ('normal' amines) for the same compound are quite common and can be as high as 20%... So the difference in pKa between R-NH- and R'-NH- may be less than measurable. Logged Print Pages: [1] Go Up « previous next » Sponsored Links...
In this scheme, alkyl anions are the equivalent of the royal flush – they win the proton from everything underneath them in the table. Why is pKa so important? Because every nucleophile is potentially a base, and vice versa. If you have a reaction where it looks like you might get SN2...
2、i nes28Nitroge n Compo unds14Hydraz ines28Aliphatic amines15, 17, 19Semicarbaz ones28Cyanoamines16Amidoximes28Ani li nes17, 18, 20Thiols29Nucleosides21Carbon Acids30,31Special Table Heterocycles22In dicators31Acridi ne23Refere nces32-34Ben zoq uin oli ne24Cinn oli ne23Hyda ntoin24Imida...
Williams pKa Values INDEX Inorganic Phosphates Carboxylic acids Aliphatic Aromatic Phenols Alcohols and oxygen acids Amino Acids Peptides Nitrogen Compounds Aliphatic amines Cyanoamines Anilines Nucleosides Special Table Heterocycles Acridine Benzoquinoline Cinnoline Hydantoin Imidazole 2 3 4, 8 4, 8 7, 8...
40.83K 文档页数: 5页 顶/踩数: 103/0 收藏人数: 14 评论次数: 0 文档热度: 文档分类: 生活休闲--科普知识 文档标签: pKa值无机酸含氧酸pKaDMSOtrateJOCSubsPhSeTable 系统标签: pka无机酸有机酸含氧ripindmso D.H.Ripin,D.A.Evans*Values<0forH2OandDMSO,andvalues>14forwaterand>35forDMSOwereextrap...
Williams pKa Values INDEX Inorganic Phosphates Carboxylic acids Aliphatic Aromatic Phenols Alcohols and oxygen acids Amino Acids Peptides Nitrogen Compounds Aliphatic amines Cyanoamines Anilines Nucleosides Special Table Heterocycles Acridine Benzoquinoline Cinnoline Hydantoin Imidazole 2 3 4, 8 4, 8 7, 8...
Evans pKas of Nitrogen Acids Chem 206 Substrate pKa H O (DMSO) Substrate pKa H O (DMSO) Substrate pKa H O (DMSO) Substrate pKa H O (DMSO) 2 2 2 2 PROTONATED NITROGEN AMINES IMIDES HYDROXAMIC ACID AMIDINES + 9.2 (10.5) HN 4.7 (7.9) O O O N H4 3 8.88 (13.7) + 10.6 NH3 ...
11 Quinoxaline 27 Amino Acids 12 Special Nitrogen Compounds 28 Peptides 13 Hydroxylamines 28 Nitrogen Compounds 14 Hydrazines 28 Aliphatic amines 15, 17, 19 Semicarbazones 28 Cyanoamines 16 Amidoximes 28 Anilines 17, 18, 20 Thiols 29 Nucleosides 21 Carbon Acids 30,31 Special Table Heterocycle...