7417-54-1Relevant academic research and scientific papers
On Conformational Sensitivity in the Ultraviolet Spectra of Cyclopropyl Ketones and Olefins
Van-Catledge, Frederic A.,Boerth, Donald W.,Kao, James
, p. 4096 - 4106 (1982)
Selected cyclopropyl ketones and olefins have been prepared to approximate the three principal conformers (s-trans, s-cis, and gauche) of vinylcyclopropane and cyclopropanecarboxaldehyde.The model systems are as follows: for the s-cis form, 4-oxo- (VI) an
Preparation of α,β-unsaturated carbonyl compounds
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, (2008/06/13)
A process for the preparation of α,β-unsaturated carbonyl compounds of the formula I STR1 where R1 is hydrogen, C1 -C10 -alkyl, C1 -C10 -alkoxy or aryloxy, R2 is aryl which is unsubstituted or substituted by C1 -C4 -alkyl, C1 -C4 -alkoxy, trifluoromethyl and/or halogen and R3 is tetrahydrofuranyl or aryl which is substituted by C1 -C4 -alkyl, C1 -C4 -alkoxy, trifluoromethyl and/or halogen, which comprises reacting 3-amino-2-propen-1-ones of the formula II STR2 where R1 and R2 have the abovementioned meanings, and R4 and R5 are, independently of one another, hydrogen, C1 -C10 -alkyl or aryl, with a magnesium halide of the formula III where Y is halogen, at from -20° to 100° C., and novel α,β-unsaturated carbonyl compounds and novel 3-amino-2-propen-1-ones are described.
