Synthesis and derivatives of tetrafluorocyclopropene
作者:G. Camaggi、F. Gozzo
DOI:10.1039/j39700000178
日期:——
Tetrafluorocyclopropene has been isolated, in low yield, from the photolysis products of hexafluorocyclobutene, and synthesised by dechlorination of 1,2-dichlorotetrafluorocyclopropane. The latter, which could be separated into its two geometrical isomers, was obtained by addition of difluorocarbene to 1,2-dichlorodifluoroethylene. Tetrafluorocyclopropene was hydrolysed by water and gave tetraphenylcyclopropene
Hitherto unknown squaric acid difluoride (3,4-difluoro-3-cyclobutene-1,2-dione) (1a) has been synthesized in 71% yield by gas phase fluorination of squaric acid dichloride (1c) with KF at 250 degrees C. (1a) has been characterized by multinuclear NMR, mass, IR and Raman spectra. The IR spectrum is in excellent agreement with its ab initio prediction (MP2, 6-311 + G(2d, p)). The vacuum thermolysis of (1a) at 700 degrees C does not yield the expected decarbonylation product FCCF (2a) although the precursor of the latter, F2CCCO, and three C3F4 isomers (propyne, allene, cyclopropene) which are also found as decomposition products of (2a) have been identified. (C) 1999 Elsevier Science S.A. All rights reserved.
Fluorinated cyclopropenyl methyl ethers. New stable cyclopropenium cations
作者:Bruce E. Smart
DOI:10.1021/jo00876a005
日期:1976.7
Vibrational spectra and force constants for the perfluorocyclopropenyl cation
作者:Norman C. Craig、Gini F. Fleming、Julianto Pranata
DOI:10.1021/ja00311a019
日期:1985.12
Fluorocyclopropanes. III. 1,4-Cycloaddition reactions of perfluorocyclopropene and 1,2-bis(trifluoromethyl)-3,3-difluorocyclopropene