Competitive [4 + 2]-cycloaddition versus [1,5]-hydrogen sigmatropy in a cycloheptatriene. An efficient route to 3-azatricyclo[5.3.1.04,10]undeca-5,8-diene
Competitive [4 + 2]-cycloaddition versus [1,5]-hydrogen sigmatropy in a cycloheptatriene. An efficient route to 3-azatricyclo[5.3.1.04,10]undeca-5,8-diene