One-Pot Preparation of α-Cyanovinyl Ethers (2-Alkoxy-2-alkenenitriles) from Vinyl Ethers: Elaboration to 3-Alkoxy-2-oxo-3-alkenenitriles and Aluminium Chloride-Catalyzed Cycloadditions to Cyclopentadiene
Nucleophilic Organosilicon Intermediates Turned Electrophilic: (Trimethylsilyl)methyl, Trimethylsilyloxy and also 2-Tetrahydropyranyloxy as Terminators of Cycloadditions of Allyl Cations. A Short Route to Dehydrozizaenes (6-Methylenetricyclo[6.2.1.01,5]-undec-9,10-enes) and Related Tricycles and [3.2.1]-Bicycles.