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In organic chemistry, an imine (/ ɪ ˈ m iː n / or / ˈ ɪ m ɪ n /) is a functional group or organic compound containing a carbon–nitrogen double bond (C=N). The nitrogen atom can be attached to a hydrogen or an organic group (R). The carbon atom has two additional single bonds.
A carbon–nitrogen bond is a covalent bond between carbon and nitrogen and is one of the most abundant bonds in organic chemistry and biochemistry. [ 1 ] Nitrogen has five valence electrons and in simple amines it is trivalent , with the two remaining electrons forming a lone pair .
Others, however, insist that such a usage is an abuse of terminology, and limit the Michael addition to the formation of carbon–carbon bonds through the addition of carbon nucleophiles. The terms oxa-Michael reaction and aza-Michael reaction [2] have been used to refer to the 1,4-addition of oxygen and nitrogen nucleophiles, respectively. The ...
Sports Illustrated Top 20 Male Athletes of the Decade (2009) C. CNN/SI; Sports Illustrated cover jinx; The Curling News; F. Faces in the Crowd (Sports Illustrated ...
Tiegs also talks about her first cover for the Sports Illustrated Swimsuit Issue, noting that the photo was not a part of the official photoshoot. Tiegs first graced the cover of the special issue ...
While nucleophilic acyl substitution reactions can be base-catalyzed, the reaction will not occur if the leaving group is a stronger base than the nucleophile (i.e. the leaving group must have a higher pK a than the nucleophile). Unlike acid-catalyzed processes, both the nucleophile and the leaving group exist as anions under basic conditions.
Olivia Ponton attends the 2023 Sports Illustrated Swimsuit Issue launch at Hard Rock Hotel New York on May 18, 2023 in New York City. In 2022, Ponton was named a Sports Illustrated Swimsuit rookie ...
The 2025 Sports Illustrated Swimsuit roster is growing.. On Monday, Nov. 11, the magazine announced that Olympic gymnast Jordan Chiles and pro surfer Caroline Marks would be featured in this year ...