0
登入
請輸入想查詢的單字或片語
alkyl
US
・
UK
A1 初級
n.
名詞
烷基 ； 烴基
影片字幕
化學203.有機光譜學。講座02。含C,H,O的官能團 (Chem 203. Organic Spectroscopy. Lecture 02. C,H,O-Containing Functional Groups)
51:47
moments, so if you have, say, an alkyne with two
alkyl
groups on the end, you’re probably
alkyl
generally not that informative, but usually they fall between about 3000 and about
B1 中級
化學203.有機光譜學。第16講.結構與立體化學中的13C化學變化 (Chem 203. Organic Spectroscopy. Lecture 16. 13C Chemical Shifts in Structure & Stereochemistry)
59:20
So first let's talk about alpha
alkyl
substitution.
alpha
alkyl
substitution leads to more downfield shifting.
B1 中級
化學生物學概論128.講座02.化學生物學的常用工具。 (Introduction to Chemical Biology 128. Lecture 02. Common Tools in Chemical Biology.)
18:29
with some sort of
alkyl
halide and an acid,
B1 中級
聚氨酯 (Polyurethane)
36:58
zinc carboxylates have been used as alternatives.
Alkyl
tin carboxylates, oxides and mercaptides
B2 中高級
化學203.有機光譜學。第06講。烷烴、烯烴、雜原子和羰基化合物。 (Chem 203. Organic Spectroscopy. Lecture 06. Alkanes, Alkenes, Heteroatom and Carbonyl Compounds)
40:05
If you can get a 1,2-
alkyl
shift,
to give a tert-butyl
alkyl
carbocation,
B2 中高級
醛類和酮類的物理性質。 (Physical properties of aldehydes and ketones)
10:13
so if you think about the
alkyl
groups
so let's just look at the
alkyl
groups here.
B1 中級
有機化的SN 反應（Substitution Reactions - SN1 and SN2 Mechanisms: Crash Course Organic Chemistry #21）
12:19
Our substrate here is a primary
alkyl
bromide, which rules out SN1 right away because SN1 reactions can only happen with secondary or tertiary substrates.
B2 中高級
What Is Lurking In U.S. Tap Water?
12:38
These per and polyfluorinated
alkyl
substances.
B1 中級
