6948 J. Org. Chem. 1991, 56, 6948-6950 after 14 mos neat at ambient temperature afforded an unspecified yield of an impure amino diazo compound corresponding tq 10, along with a small amount of a 2: l adduct. None of the triazoline was found. Thus, azide-electron- deficient olefin dipolar cycloadditions, like many other pericyclic reactions,-are significantly accelerated by pressure. In view of the increasing availability of preparative high-pressure ...
