河南洛阳洛龙区：探索形成不同领域合格党员创建标准
百度 “但这是一把双刃剑，有的乘客可能赶时间，发车间隔太长的话，这部分客源很可能又流失了，一味地减少班次也是不行的。
Use this tag for questions relating to organic molecules and their properties (structure of organic molecules, spectroscopic properties, reaction mechanisms, stereochemistry etc). DO NOT use this tag as the only tag in your question, as this tag by itself cannot appropriately classify your question. Always use this tag in addition to other more specific tags.
10,891 questions
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Acid/Base Extraction
I'm attempting to extract Nuciferine from plants.
I've been trying to keep my ingredients organic/food friendly
I use distilled/sugarcane ethanol, distilled water, lemon juice (Acid) and potassium ...
2
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Which is more acidic in gas phase: 4-chlorobenzoic acid or 4-fluorobenzoic acid?
According to NIST data the $\Delta{G}$ values associated with the reverse of the acid dissociation reaction of gaseous 4-fluorobenzoic acid and gaseous 4-chlorobenzoic acid have a greater error in ...
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Dioxygen Lewis Structure With Resonance in Molecular Orbital Theory
I was reviewing an Organic Chemistry text for an upcoming class, and a practice problem on molecular orbitals asked for the most appropriate Lewis Structure for dioxygen, diatomic oxygen. It said in ...
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conformers of 1-chloropropane
With respect to the C1-C2 bond in 1-chloropropane, the gauche conformer is more stable than the trans conformer at room temperature. Despite greater steric strain, the molecule adopts the gauche ...
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Hofmann rearrangement and carbamates
I know that amines with one less carbon atom are formed by Hofmann's separation from amides, with the presence of an oxidizing agent such as elemental bromine or chlorine in an alkaline medium. ...
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Which is more stable -- carboanion on vinylic position or carboanion on a sp3 carbon
So i know that vinylic position has more electronegativity due to higher percentage of s-character, so it accommodates the electron better and in normal sp3 carbons there is stabilisation due to ...
2
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1
answer
663
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How broad is the meaning of the name "fructose"?
In general, the name "fructose" is used to refer to all tautomeric forms and enantiomers of D-fructose (according to my teacher). Does this imply that "fructose" is the umbrella ...
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How does the final step in Weygand's scheme A of formation of osazones occur?
According to Weygand's 1958 Paper (in German by the way) the formation of osazone can take place through either one of his two proposed schemes (Weygand's Schemes A and B) but according to this more ...
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Selective protection of 5-aminonaphthalen-2-ol
I was wondering if any of you had ideas or viable strategies for the O-protection of 5-aminonaphthalen-2-ol. I need it for further derivatization. The PG needs to be base-stable (potassium carbonate ...
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Synthesis of 2-methylimidazole
How do I synthesize 2-methylimidazole from glyoxal, acetaldehyde, and aqueous ammonia? I am performing the synthesis with these reagents but am not obtaining any product.
We tested various conditions. ...
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What is the mechanism of ether formation from alkyl halides using silver salts?
The following reaction was presented in my textbook:
$$\ce{2R-X->[Ag2O]R-O-R}$$
(It is also presented in this book (Ch 1.6.6))
I tried searching for its mechanism and the closest I got to was this, ...
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Carbocation stability comparison between two molecule
How is carbocation in (A) more stable than (B), when (B) has conjugation and (A) doesn't.
(A) also has 3 three membered ring which is very unstable due to Ring Strain.
All the factors (all that i know ...
2
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71
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How does addition of permanganate to alkene work exactly?
I usually am able to understand arrow notations in common mechanisms in both a valence bond theory and frontier MO theory fashion. I have just recently studied ozonolysis where ozone attaches onto ...
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How does SIR affect dipole moment of molecules? [duplicate]
So I have to compare the dipole moments of the above two molecule without using experimental data.
It seems to me that both should have equal dipole moments as the both methyl from both side in (B) ...
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Comparing Rates to SN_Ar regarding Halide Substituents
I know that the during a general nucleophilic aromatic substitution reaction the formation of the Meisenheimer complex is the RDS.
I have added below an excerpt from a website I've been referring to, ...
