Ring Contraction of a Two-Carbon Bridged SPIROPENTANE (cas 157-40-4)

Add time:09/28/2019    Source:infona.pl

The diazoketone derived from tricyclo[4.1.0.0 1 , 3 ]heptan-4-one on photolysis in dimethylamine leads to a novel product that appears to be formed via a cyclopropylcarbene rearrangement followed by dimethylamine addition and the cleavage of one of the cyclobutane rings. In a matrix at 15K, photolysis led to the loss of the 2085 cm - 1 diazo band and the formation of a new band at 2117 cm - 1 which is characteristic of a small ring ketene such as cyclopropylketene.

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