organic chemistry - Why is OTs a good leaving group and how …
2017年4月23日 · Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.
organic chemistry - Using molecular orbital for determining …
2019年9月19日 · The leaving group itself does play a slight role here in determining the energy of the $\unicode{x3c3}^*$ orbital and thus whether it is energetically favourable for the nucleophile to attack. Based on the cited part, looks the orbital plays the role in nucleophilicity although the iodide example gives counterexample of nucleophilicity vs ...
Naming compounds with an OX group - Chemistry Stack Exchange
2016年4月20日 · The corresponding subsection of the current version of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book) reads as follows: P-67.1.3.2 Esters of mononuclear noncarbon oxoacids. Esters of mononuclear noncarbon acids are named in the same way as esters of organic acids (…).
organic chemistry - Which is the better leaving group: R- or H ...
2016年4月8日 · R- is very vague. $\ce{-CH3}$ is a terrible leaving group, but $\ce{-CCl3}$ is a fair nucleofuge. "Leaving groups" typically means nucleofuge, which is a leaving group that takes the electrons from the broken bond with it as it leaves. $\ce{-H}$ makes for a poor nucleofuge, $\ce{H-}$ (hydride), but it is a common electrofuge, $\ce{H+}$, which is the opposite of a …
Why is OH a good leaving group? - Chemistry Stack Exchange
2017年2月23日 · In general, the conjugate base for a strong acid is a good leaving group, and indeed, you can apply the same rationale for why something is the conjugate base of a strong acid to why it's a good leaving group. This, of course, refutes your claim that hydroxide is a good leaving group since it is not the conjugate base of a strong acid.
organic chemistry - How does tBu2Si(OTf)2 react in uridine in DMF …
2023年9月8日 · Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.
organic chemistry - Boron enolates double bond geometry
2016年8月13日 · Thanks for contributing an answer to Chemistry Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers. Making statements based on opinion; back them up with references or personal experience. Use MathJax to format equations.
inorganic chemistry - Why does the solubility of group II …
2014年6月14日 · However, due to the square factor, the lattice enthalpy decreases faster than the hydration enthalpy. This is why the solubility of Group 2 hydroxides increases while progressing down the group. Now let's look at $\ce{SO4^2-}$. The same thing applies to the cation while progressing down the group.
inductive effect - Are alkyl groups electron withdrawing?
2024年12月1日 · The positive inductive effect of alkyl group is the same reason for the instability of a 3° carbanion. If we consider 1°,2° and 3° alcohols, 1° is more acidic as the multiple alkyl groups attached to oxygen in tertiary and secondary increase the electron density on the O atom once, hence reducing its tendancy to lose a proton and become ...
IUPAC name of the tert-pentyl group - Chemistry Stack Exchange
2016年11月8日 · However, according to Subsection P-57.1.4 of the current version of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013, these retained names are no longer recommended. The preferred prefix names are as follows: “tert-pentyl”: 2-methylbutan-2-yl