Anagram & Information om | Engelska ordet DIANION

Exempel på hur man kan använda DIANION i en mening

• The addition of two electrons removes the antiaromaticity; it becomes a planar 10π-electron aromatic species and is thus a bicyclic analogue of the cyclooctatetraene (COT) dianion.
• The intermediates are the carboxyl dianion A which gives an intramolecular nucleophilic substitution by the β-carboxylate anion to produce a four-membered β-lactone ring B.
• The dianion of ethyl acetoacetate is also a useful building block, except that the electrophile adds to the terminal carbon.
• Under these conditions, the sulfonate groups are fully deprotonated and the mediator exists as a dianion.
• Use of the dianion of phenylacetic acid with formaldehyde gives tropic acid, an intermediate used in the synthesis of atropine and hyoscyamine.
• The iminodiacetate dianion is a tridentate ligand, forming metal complexes by forming two, fused, five membered chelate rings.
• For the first step, the dianion from malonic acid half-ester is formed by treatment with butyllithium.
• Unlike croconate violet, the croconate blue dianion is not planar; the three dicyanomethylene groups are twisted by about 30 degrees from the ring plane.
• The hydrogen atoms connected to carbon are removed by n-butyllithium in tetrahydrofuran and the resulting lithium dianion is reacted with bromine at 0 °C to form the bromo monoanion.
• For a less sterically hindered compound, the generated radical anion readily dimerizes to form a dianion with a P-P bond.
• Upon further reaction with a 1,4-dilithiated diazabutadiene, this gallium heterocycle forms a new complex with the diazabutadiene monoanion fragment datively bonded to the gallium center and an ene-diamido dianion covalently bonded to the Ga center.

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