Small-ring Compounds. XX. 1,3-Dimethylenecyclobutane and Related Compounds<sup>1</sup>
作者:Frederick F. Caserio、Stuart H. Parker、Richard Piccolini、John D. Roberts
DOI:10.1021/ja01553a049
日期:1958.10
1,3-Dimethylenecyclobutane and 1-methyl-3-methylenecyclobutene have been synthesized by way of 3-methylenecyclobutanecarboxylic acid and (3-methylenecyclobutylcarbinyl)-dimethylamine. No clear experimental evidence was obtained for π-type electronic interaction across the ring of 1,3-dimethylenecyclobutane.