Photochemistry of 2,3-dimethylcyclobutanone. Temperature and wavelength effects.
作者:Nicholas J. Turro、Daniel Bauer、V. Ramamurthy、Frank Warren
DOI:10.1016/s0040-4039(01)92502-x
日期:1981.1
The ratio of products formed in the photochemistry of cis- and trans-2,3-dimethyl-cyclobutanone in alcohols is found to be wavelength and temperature dependent.
A Cyclobutanol Ring-Expansion Approach to Oxygenated Carbazoles: Total Synthesis of Glycoborine, Carbazomycin A and Carbazomycin B
作者:Philip J. Parsons、Philipp Natho、Lewis A. T. Allen
DOI:10.1055/s-0042-1751411
日期:——
The transition-metal-free total syntheses of the oxygenated carbazole natural products glycoborine, carbazomycin A and carbazomycin B are reported. The key step involves an NBS-mediated cyclobutanol ringexpansion to 4-tetralones for the preparation of the tricyclic carbazole core.
报道了含氧咔唑天然产物 glycoborine、carbazomycin A 和 carbazomycin B 的无过渡金属全合成。关键步骤涉及 NBS 介导的环丁醇环扩展为 4-四氢萘酮,用于制备三环咔唑核。