Photolytic Access to Oxaspirodecanes and Chromenes from Vinyldiazo Ester Cycloaddition with <i>p</i> -Quinones: A Vinylcarbene Is Not Involved

S Soumen Biswas (Department of Chemistry) R Ramon Trevino (Department of Chemistry) S Seth O. Fremin (Department of Chemistry) L Luis Mario Sanchez-Palestino (Escuela Superior de Medicina) B Babu Raj Dhungana (Department of Chemistry) A Arka Porey (Department of Chemistry) W William B. Hughes (Department of Chemistry) H Hadi D. Arman (Department of Chemistry) O Oleg V. Larionov (Department of Chemistry) M Michael P. Doyle (Department of Chemistry)