Author Topic: 1 atm Catalytic Hydrogenation NaBH4-Ni Acetate  (Read 804 times)

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Rhodium

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1 atm Catalytic Hydrogenation NaBH4-Ni Acetate
« on: October 08, 2002, 06:16:00 AM »

https://www.thevespiary.org/rhodium/Rhodium/pdf/borohydride.p2.nickel.pdf



Nickel(II)Acetate tetrahydrate and sodium borohydride easily reduces a variety of alkenes alkynes and dienes selectively.

Perhaps it can reduce nitroalkenes too?

Osmium

  • Guest
Haven't looked at it (too tired, lazy and ...
« Reply #1 on: October 08, 2002, 03:35:00 PM »
Haven't looked at it (too tired, lazy and confused right now) but me thinks to reduce nitroalkenes you generally need a strong, fast and nonselective catalyst+reducing agent system under more drastic condidions, not a selective one.

I'm not fat just horizontally disproportionate.

Barium

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I´ve made and tried both P1- and P2-NiB/NaBH4 and ...
« Reply #2 on: October 08, 2002, 03:54:00 PM »
I´ve made and tried both P1- and P2-NiB/NaBH4 and got quite good results from reducing both ketoximes and nitroalkanes, but crap when tried with nitroalkenes.

Catalytic hydrogenation freak

Rhodium

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Can you fuel the above hydrogenation by in situ ...
« Reply #3 on: October 08, 2002, 05:38:00 PM »
Can you fuel the above hydrogenation by in situ generation of hydrogen from NaBH4, or do you have to generate it externally?

Barium

  • Guest
Both the P1- and P2-NiB was generated externally ...
« Reply #4 on: October 08, 2002, 06:43:00 PM »
Both the P1- and P2-NiB were generated externally and the H2(g) internally.

Catalytic hydrogenation freak