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Question:

Organic Chemistry Question?

What makes lithium aluminum hydride more reactive toward esters than sodium borohydride.

Answer:

You can solder them together.
Yes with HeliArc though I think theres probably something newer out there.
yuh, welding like oxy-accet flame welding?! yeah it can be done very messy or very messy! -clean and paste flux the zone and filler rod -set flame to a cool carbonzing flame -properly heat sink pieces .this will probably burn through better is to get a big tig welder with foot pedal control and argon tank, heat is still there but the fuss and bad fitting isn't
Boron only has a single shell of s-electrons and as a result, boron holds its electrons more tightly than aluminumSince it is the electrons of borohydride that must reaction with a carbonyl group, boron reduces the reactivity of those electrons Aluminum has an entire octet of electrons to repulse the electrons being shared with the hydrogen atomsThat repulsion makes those electrons more available for reactionSince esters are less reactive than ketones, for example, the reactivity of these reducing agents can be differentiated by how they reaction with estersSo, borohydride reacts slowly with them while LiAlH4 reacts rapidly.

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