144830-89-7Relevant academic research and scientific papers
Simple and effective protocol for Claisen-Schmidt condensation of hindered cyclic ketones with aromatic aldehydes
Vashchenko, Valeriy,Kutulya, Lidiya,Krivoshey, Alexander
, p. 2125 - 2134 (2008/03/28)
A simple and effective methodology for Claisen-Schmidt condensation of (-)-menthone and other hindered cyclic ketones with aromatic aldehydes under highly basic conditions using a polar aprotic solvent and a strong base (alkali metal hydroxide or an alkoxide) is described and discussed. Georg Thieme Verlag Stuttgart.
PHOTOCHEMICAL PROPERTIES OF CHIRAL 2-ARYLMETHYLENE-p-MENTHAN-3-ONES
Yarmolenko, S. N.,Chepeleva, L. V.,Kutulya, L. A.,Vashchenko, V. V.,Drushlyak, T. G.,Ponomarev, O. A.
, p. 127 - 136 (2007/10/03)
Quantitative aspects of E-Z photoisomerization of chiral (-)-2-arylidene-p-menthan-3-ones and model 2-benzylidenecyclohexanone and benzylidenepinacolone were studied.The photo-isomerization of 2-arylmethylenementhanones is not accompanied by inversion of the chiral center in the α-position to the carbonyl group; the quantum yields only slightly depend on the nature of the solvent and of the substituent in the aryl fragment.The quantum yield ratio for the direct and reverse photoreactions is much higher for cyclic α,β-unsaturated ketones than that for the related acyclic ketones, which is rationalized in terms of structural features of the E and Z isomers.Reasons for spectral differences between the E and Z forms are analyzed.
The Molecular Structure of Isomeric 2-Arylidene Derivatives of p-Menthanones and p-(4-Menthen)one and their Ability to Coil the Nematic Phase
Kutulya, R. A.,Yarmolenko, S. N.,Vashchenko, V. V.,Chepeleva, L. V.,Patsenker, L. D.,Ponomarev, O. A.
, p. 80 - 86 (2007/10/02)
The efficiency of inducing helical ordering in the nematic mesophase is markedly lower for the chiral Z isomers of 2-arylidene derivatives of diastereomeric p-menthanones and p-(4-menthen)one than for the corresponding E forms.The change in the sign of th
