The Vespiary

The Hive => Novel Discourse => Topic started by: Rhodium on October 08, 2002, 06:16:00 AM

Title: 1 atm Catalytic Hydrogenation NaBH4-Ni Acetate
Post by: Rhodium on October 08, 2002, 06:16:00 AM

https://www.thevespiary.org/rhodium/Rhodium/pdf/borohydride.p2.nickel.pdf (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?
Title: Haven't looked at it (too tired, lazy and ...
Post by: Osmium 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.
Title: I´ve made and tried both P1- and P2-NiB/NaBH4 and ...
Post by: Barium 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
Title: Can you fuel the above hydrogenation by in situ ...
Post by: Rhodium 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?
Title: Both the P1- and P2-NiB was generated externally ...
Post by: Barium 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