Why is OTs a good leaving group and how does it work?
2017年4月23日 · I've been told that OTs O T s is a good leaving group for substitution reactions, but I'm not sure how it works or why it is a good leaving group. Can someone please explain? …
What does the "D" group represent on a chiral center?
2012年11月19日 · I am trying to figure out the configuration for this chiral carbon to answer a homework question, however they arbitrarily include a "D" group as shown in the image. My …
General rules for deciding volatility - Chemistry Stack Exchange
2012年5月2日 · In chemistry and physics, volatility is the tendency of a substance to vaporize. Volatility is directly related to a substance's vapor pressure. At a given temperature, a …
Why does using NaI as a nucleophile and acetone as solvent lead …
2018年12月18日 · In a reaction with a secondary leaving group, why does using NaI N a I with acetone as a solvent lead to an SN2 S N 2 reaction mechanism instead of SN1 S N 1? I …
What factors could lower the voltage of a galvanic cell
2016年1月20日 · There are more factors to consider when determining the true voltage of the cell such as the development of overpotentials. 'In electrochemistry, overpotential is the potential …
Why there is no change in water level when salt is added?
2015年6月18日 · Let us say we have one glass of water and after that when we add one or two spoon of salt then we notice that salt dissolves in it but when we measure the water level we …
Why is pyridine used when making tosyl esters from alcohols?
2015年1月31日 · Tosyl chloride is used to make a hydroxyl group into a better leaving group. However, when the reaction of tosyl chloride and an alcohol occurs, a weak base such as …
Is there a way to generate SMILES from ChemDraw files?
2020年9月11日 · I have a set of ChemDraw .cdx files, and I would like to extract smiles strings from it. Can Open Babel do that or maybe the rdkit in Python? Any other suggestions?
Why do chemistry and physics have different sign convention in ...
2017年1月12日 · In physics class, we write the first law of thermodynamics as dU =dQ −dW d U = d Q − d W and in the physical chemistry class, we write the same law as dU =dQ +dW d U = d …
organic chemistry - Why do cyclic ethers have higher boiling …
2015年6月3日 · While this is an interesting suggestion, I think the finding may be more general than for ethers. In particular, alkanes/alkenes also seem to show a similar boiling point …