Order of lewis acidity for BBr3, BCl3, BMe3, BH3, BPh3?
Aug 1, 2018 · BBr3 is more acidic than BCl3 due to weaker pi back bonding in BBr3 as compared to BCl3.BCl3 is stronger acid than BH3 due to electron withdrawing effect of Cl make B …
Why do BH3 and NaBH4 have different selectivities?
Jul 22, 2015 · Your assertions are correct, for the most part. $\ce {BH3}$ is a Lewis acid, and it does not reduce carbonyl groups by directly donating a hydride group like $\ce {NaBH4}$ …
organic chemistry - Why does BH3/THF reduce the carbonyl group …
Jan 30, 2022 · Why does BH3/THF reduce the carbonyl group to a methylene rather than an alcohol? Ask Question Asked 3 years, 10 months ago Modified 3 years, 10 months ago
Reduction of acids with borane - Chemistry Stack Exchange
Mar 28, 2015 · What is the mechanism of the reduction of organic acids with borane? Borane reductions don't work well with electron deficient carbonyl groups. Why is that so, and how …
How does a hydroboration mechanism actually work?
Mar 19, 2017 · In BH3, Boron is less electronegative than H (i.e. hydrogen) , hence in the syn addition I have shown, hydrogen ends up being attached to a more substituted carbon atom.
organic chemistry - What is the balanced equation of BH3/THF …
Feb 14, 2019 · The reduction of secondary amides with BH3 requires 3 equivalents, mechanism shown below image sourced from here. The borane becomes HB=O which may transform …
hybridization - What makes banana bonds possible in diborane ...
May 4, 2012 · Diborane has the interesting property of having two 3-centered bonds that are each held together by only 2 electrons (see the diagram below, from Wikipedia). These are known …
What happens when an alkylborane is treated with acetic acid?
Dec 7, 2017 · In the hydroboration reactions of alkenes I've seen so far, they were always followed by oxidation with $\\ce{H2O2/NaOH}$ (to yield alcohols). Today I found a peculiar …
Why can't sodium borohydride reduce carboxylic acid and ester …
Apr 12, 2021 · Sodium borohydride ($\\ce{NaBH_4}$) is a reducing agent used in various organic reaction to reduce aldehydes, ketones and acyl chlorides. Why can't sodium borohydride …
What is the oxidation state of Boron in Ammonia Borane?
Feb 20, 2020 · $$\ce {NH3 + BH3 \rightarrow NH3BH3}$$ Now in this example what is the oxidation state of borane? Is it $+4$, if yes then can this example be considered a type of …