安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- organic chemistry - Why is active sec-pentyl group called so . . .
Why it is called 'sec pentyl' (case 2): If you carefully look at the alkyl radical in case 2, you would realize it is also a secondary radical so that it is also a sec -pentyl group Thus, the relevant compound in our case is pent-3-ol, which can exists in only one form, because it is not optically active
- IUPAC name of the tert-pentyl group - Chemistry Stack Exchange
What is the IUPAC name of tert-pentyl? I know that isopentyl is 2-methylpentane and neohexyl would be 2,2-methylhexane, but what about tert?
- How does the sec-pentanyl group look? - Chemistry Stack Exchange
But with secondary pentyl group (of normal pentane, $\ce {CH3-CH2-CH2-CH2-CH3}$), which one is the secondary? Does the common naming fail here and we need the IUPAC system or am I missing something?
- When to use iso and sec while naming compounds in alkyl halides?
Preferably, you don’t use “iso” and “ sec ” at all when naming alkyl halides for two reasons: According to the current version of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book), the prefixes “isobutyl” and “ sec -butyl” etc are no longer recommended (“isopropyl” is still retained, but only for general nomenclature
- organic chemistry - How to order the reactivity of t-butyl iodide and . . .
The order would be neo-pentyl bromide > tert-butyl iodide This is because SN2 has concerted mechanism Although, better is the leaving group, higher is the reaction rate for SN2, but, if the substrate is bulky, it has more tendency to follow SN1 mechanism because of bulkiness of the substrate which hinders the backside attack of the nucleophile In case of tert-butyl iodide, the carbocation
- Does neopentyl halide undergo SN1? - Chemistry Stack Exchange
Carbocation formed from neopentyl halide is primary in nature So it is not stable Although it undergoes rearrangement reaction to form tertiary one, now it can undergo SN1 easily So if we say it
- Proton NMR of tert-amyl alcohol - Chemistry Stack Exchange
I just started learning about proton NMR According to Molbase, the HNMR data for tert -amyl alcohol (2-methylbutan-1-ol) shows four kinds of protons at 0 9 ppm, 1 24 ppm, 1 44, and 3 65 ppm However, it seems contradictory to what I learnt, since the protons on secondary carbon (1 44 ppm) are downfield to the protons on tertiary carbon (1 24 ppm), which confuses me, since I learnt that
- What is the IUPAC name of the following compound? [closed]
When listing preferred IUPAC names, the ring prioritized over the chain (making it a substituent), especially when the chain is shorter than the ring First we label the carbon at the end of the chain as '1' and continue across the chain The bromines are at positions 2 3, and it is a 5 carbon chain So, we label it as pentyl chain and it therefore follows the IUPAC name is (2,3
|
|
|