Kasanskii; Lukina, Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1951, p. 47,54
作者:Kasanskii、Lukina
DOI:——
日期:——
Carbon-13 NMR spectra of methylated cyclobutanes and ethyl cyclobutane-carboxylates
作者:Ernest L. Eliel、K. Michal Pietrusiewicz
DOI:10.1002/mrc.1270130308
日期:1980.3
AbstractThe 13C NMR spectra of cyclobutane and seven methylated homologs and of ethyl cyclobutanecarboxylate and five isomeric diethyl cyclobutanedicarboxylates are reported and substituent parameters for methyl groups in methylcyclobutanes are calculated. Of note is a sizeable and nearly configuration‐independent upfield shifting γ‐effect.
Kasanskii; Lukina, Doklady Akademii Nauk SSSR, 1950, vol. 74, p. 263,265
作者:Kasanskii、Lukina
DOI:——
日期:——
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.