Potassium lert-butoxide

The anion 11 which is readily formed on low temperature exposure of 4 to potassium lert-butoxide can be used to prepare a rich variety of A -substituted azonine systems 1 by trapping with appropriate electrophiles (RX).9,12... 

During the preparation of l-chloro-l-(2-furyl)cyclopropanes a small amount (up to 12%) of 5-t< r/-butoxy-2-chloromethylene-2,5-dihydrofuran, the addition product of potassium lert-butoxide to the bipolar structure of chloro(2-furyl)carbene, was formed.174,175 Cyclopropanes substituted at C 3 in the thiophene ring are sometimes unstable to column chromatography. The sterically more crowded chloro(3-phenyl-2-thienyl)carbene failed to undergo addition to 2,3-dimethylbut-2-ene.176... 

METHYL ISOBUTYL KETONE (108-10-1) Forms explosive mixture with air (flash point 62°F/17°C). Able to form unstable and explosive peroxides on contact with air and/or when in contact with hydrogen peroxide. Reacts violently with strong oxidizers, aldehydes, aliphatic amines, nitric acid, perchloric acid, potassium lert-butoxide, strong acids, reducing agents. Dissolves some plastics, resins, and rubber. 

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