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9-Borabicyclo[3.3.1]nonane or 9-BBN is an organoborane compound. This colourless solid is used in organic chemistry as a hydroboration reagent. The compound exists as a hydride-bridged dimer, which easily cleaves in the presence of reducible substrates. [1] 9-BBN is also known by its nickname 'banana borane'. [2]
This reagent is generated by treating 9-BBN with α-pinene. [2] This sterically crowded chiral trialkylborane can stereoselectively reduce aldehydes in what is known as the Midland Alpine borane reduction, or simply the Midland reduction. [3] C 8 H 12 B-pinanyl + RCDO → C 8 H 12 BOCHDR + (+)-d-pinene. Hydrolysis of the resulting borinic ester ...
Big Brother Naija Season 9, also known as Big Brother Naija: No Loose Guard was the ninth season of the Nigerian version of the reality show Big Brother. It premiered on 28 July 2024 on DStv channel 198 and GOtv channel 49.
Big Brother Naija Season 3, also known as Big Brother Naija: Double Wahala is the third season of the Nigerian version of the reality show Big Brother.Produced by South Africa's Red Pepper Pictures and it was launched on 28 January 2018 on DStv channel 198 which also served as a live feed form the house. [1]
Big Brother Naija Season 4, also known as Big Brother Naija: Pepper Dem was the fourth season of the Nigerian version of the reality show Big Brother.Produced by South Africa's award-winning production company, Red Pepper Pictures and it was launched on 30 June 2019 on the Africa Magic channels & DStv channel 198.
9-硼二环[3.3.1]壬烷 Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
C 6 H 4 O 2 BH + HC 2 R → C 6 H 4 O 2 B-CHCHR. The product is a precursor to the Suzuki reaction and is the only borane which stops at the alkene instead of reacting further to the alkane. [3] [4] Catecholborane may be used as a stereoselective reducing agent when converting β-hydroxy ketones to syn 1,3-diols.
Big Brother Naija, formerly known as Big Brother Nigeria, is a Nigerian reality competition television series, based on the Big Brother television franchise. On the show, contestants live in an isolated house and compete for a large cash prize and other material prizes at the end of the show, by avoiding being evicted from the house by viewers who vote for their favourite housemates to remain ...