What exactly makes a carbon atom "α" in a protein residue?
2020年5月27日 · But the carbon immediately next to it is $\alpha$. The one next to that is $\beta$. That should be enough to explain the $\alpha$ in your context because that carbon is the one …
Definition of alpha-carbon - Chemistry Stack Exchange
2024年1月17日 · What is an $\alpha$-carbon, and how can I identify one?. The other questions because of which my questions has been termed as duplicated is asking about alpha carbons …
How is the alpha carbon defined in alkyl halides?
2017年10月25日 · The α carbon refers to the first carbon that attaches to a functional group. According to this information, the alpha carbon in 2-bromobutane should have been the …
organic chemistry - Why are alpha carbonyl halides most reactive ...
2017年12月25日 · It will depend on your nucleophile what will actually happen. It can attack both on the carbonyl carbon and on the α-carbon. If the attack on the carbonyl carbon is reversible, …
Halogenation of an alpha-halogen ketone in acidic conditions
2015年1月8日 · When a methyl ketone is submitted to halogenation in acidic conditions with two equivalents of a halogen, the first halogenation happens at the secondary alpha carbon atom , …
carbonyl compounds - Regioselectivity of alpha halogenation of …
2015年1月8日 · Hence, in the base catalyzed case the proton will be removed from the least susbstituted alpha carbon so to produce the most stable carbanion-enolate intermediate. To …
Michael reaction or nucleophilic attack at the alpha carbon of an …
The alpha carbon is the carbon adjacent to the carbonyl carbon. The alpha carbon is actually quite nucleophilic (which is aldol condensation, alpha-alkylation, and alpha halogenation can …
Why do α-amino acids have a C-H bond at the α-carbon?
2017年8月28日 · The mechanism (described on Wikipedia, or in any biochemistry textbook) necessitates that one hydrogen is added to the α-carbon. [For the organic chemists out there, …
organic chemistry - Identifying α-hydrogen atoms with respect to ...
2024年12月2日 · $\begingroup$ @Bharat no, an $\alpha$-carbon atom w.r.t. a functional group is a carbon atom directly attached to it. The same applies to atoms of any other element, since …
Why are the secondary alpha hydrogens more acidic than primary …
2016年10月4日 · But lets take 3-methyl-2-butanone as an example. It seems that the more substituted alpha carbon is more acidic than the nearby primary carbon. In other words, it …