Discussion The results of the experiments involving t-butyl-(p-methoxyphenylethyny1)- carbinol (IXa) are to be contrasted with those obtained for t-butyl-(phenylethynyl)-carbinol (IXb). For the latter compound it was shown that the primary reaction product resulted from the initial migration of a product which would be expected if the Rupe type mechanism had been involved. In the case of the methoxy compound the rearrangement product can be ...
