89044-51-9Relevant academic research and scientific papers
Preparation of trifluoromethylated dihydrocoumarins, indanones, and arylpropanoic acids by tandem superacidic activation of 2-(Trifluoromethyl) acrylic acid with arenes
Prakash, G. K. Surya,Paknia, Farzaneh,Vaghoo, Habiba,Rasul, Golam,Mathew, Thomas,Olah, George A.
supporting information; experimental part, p. 2219 - 2226 (2010/06/15)
Chemical Reaction Reprentation Indanones and coumarins are important intermediates for the convenient synthesis of many pharmaceutical and biologically active compounds. Fluoroorganics play a vital role in the design of very effective therapeutics due to significant enhancenment in their lipophilicity, bioavailability, and fast uptake by the presence of fluorine in these molecules. Herein, we report an efficient one-pot synthesis of trifluoromethylated arylpropanoic acids, indanones, and dihydrocoumarins using Friedel-Crafts alkylation or tandem Friedel-Crafts alkylation-cycloacylation of arenes/phenols with 2-(trifluoromethyl)acrylic acid under superacidic conditions using trifluoromethanesulfonic acid. The results have been rationalized by the structure energy calculations of the involved reaction intermediates using ab initio theoretical methods.
Carbon-13 Nuclear Magnetic Resonance Spectra of Pterosin-Sesquiterpenes and Related Indan-1-one Derivatives
Fukuoka, Masamichi,Yoshihira, Kunitoshi,Natori, Shinsaku,Mihashi, Kunihide,Nishi, Masatoshi
, p. 3113 - 3128 (2007/10/02)
Methyl derivatives of indan-1-one were prepared as models to aid in interpreting the carbon-13 nuclear magnetic resonance ((13)C-NMR) spectra of pterosin-sesquiterpenes which were isolated from bracken fern, Pteridium aquilinum var. latiusculum.The chemical shifts of the carbons of the methylindan-1-ones were assigned by the proton decoupling technique.All the (13)C-NMR signals of the pterosin-sesquiterpenes were assigned by means of selective proton decouplings, and from the (13)C-(1)H long-range couplings and (13)C chemical shifts of the model compounds.Keywords - indan-1-one derivative; methylindan-1-one; pterosin-sesquiterpene; methylindan-1-one synthesis; (1)H-NMR; (13)C-NMR; selective decoupling; C-H decoupling
