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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 ...
In the same year, M. M. Midland discovered B-3-alpha-pinanyl-9-BBN as the reducing agent, which could be easily available by reacting (+)-alpha-pinene with 9-BBN. The new reducing agent was later commercialized by Aldrich Co. under the name Alpine Borane and the asymmetric reduction of carbonyl groups with either enantiomer of Alpine-Borane is ...
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]
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Our joint calendar emerged in January 2016. Over the course of the past nine years, it eventually became something my husband relied on as much as me. "It just made sense, and it worked.
President Joe Biden announced that Thursday, Jan. 9 will be a national day of mourning in honor of former President Jimmy Carter, who died Sunday in his hometown of Plains, Georgia at the age of 100.
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Gumuchian was born in Vancouver, British Columbia, [1] to an Armenian father and Swiss-Danish mother. [6] He was homeschooled before he began high school. [7] [8] While growing up, his mother had encouraged him to learn piano, but he had always struggled with music theory. [9]