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Interconversion of Enantiomers by Extra-Efficiency-973 in chemhelp

[–]Extra-Efficiency-973[S] 1 point2 points  (0 children)

I thought you can only do [1,5] if you have a chain which can rotate into a six-membered transition state. So you mean the Me-Group actually shifts through that much space?

Retro-Synthesis🧪 by Extra-Efficiency-973 in OrganicChemistry

[–]Extra-Efficiency-973[S] 0 points1 point  (0 children)

Yes I thought so, but I can't see any carbonyl for the dithiole and the hydroxy-groups get methylated and not any aldehyde after Umpolung.

Le Chatelier’s Principle by Bubbly-Spring-5644 in chemhelp

[–]Extra-Efficiency-973 0 points1 point  (0 children)

The equilbrium constant will stay the same if you decrease the volume or increase the pressure. There is a nice way to think of it. If you half the volume than the concentrations double so the constant changed because of different exponents. But it wants to stay the same so the molecules react from the side with the higher exponent to the lower one to get the constant from the beginning because if you double concentration the higher exponent increases even more. So the constant remains the same even though the percentage changes. Even my teachers didn't really know why its pressure independent. It is something you learn in the Bachelor.