Journal of Organic Chemistry p. 3699 - 3706 (1982)
Update date:2022-08-05
Topics:
Pincock, James A.
Mathur, Naresh C.
The pyrolysis of the vinyldiazomethanes 6 (X = H), 8, 9, and 10 gives mixtures of 3H-pyrazoles and cyclopropenes.The kinetics and product distribution for each case lead to a determination of the rate of vinylcarbene formation and, therefore, a direct determination of the relative carbene stabilities.The conclusion is that carbene 14 is more stable than 15.These results are then used as a basis for a discussion of the carbenes generated from the singlet photochemistry of unsymmetrical cyclopropenes, 11.
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