75654-05-6Relevant academic research and scientific papers
Relay catalysis using a rhodium complex/chiral Bronsted acid binary system: Enantioselective reduction of a carbonyl ylide as the reactive intermediate
Terada, Masahiro,Toda, Yasunori
supporting information; experimental part, p. 2093 - 2097 (2012/04/05)
Pass the baton: A one-pot relay catalysis for a carbonyl ylide formation/enantioselective reduction sequence using a dirhodium(II) tetracarboxylate and chiral phosphoric acid catalyst system is described. The four-step transformation involves a rhodium ca
Preparation and ESR-Spectroscopical Investigation of Remarkably Persistent Oxoisobenzofuranyl Radicals
Kruppa, Gary,Hug, Paul,Liegard, Andre,Rist, Guenther,Nesvadba, Petr
, p. 1821 - 1831 (2007/10/02)
The synthesis of the diastereomeric 1,1'-diaryl-1,1'-bi(isobenzofuran)-3,3'(1H,1'H)-diones 3a-d starting from the readily available 2-aroylbenzoic acids 1a-d is described (Scheme 1).Of the colourless dimers 3a-d, only the sterically congested 3a and 3b di
Preparation of 13-Substituted 8H-Dibenzoquinolizin-8-ones by Intramolecular Wittig-Horner Reaction of Dialkyl 2-(o-Acylbenzoyl)-1,2-dihydro-1-isoquinolylphosphonates
Akiba, Kin-ya,Negishi, Yoshio,Inamoto, Naoki
, p. 2188 - 2192 (2007/10/02)
Dialkyl 2-(o-acylbenzoyl)-1,2-dihydro-1-isoquinolyl-phosphonates (1) were prepared by reactions of isoquinoline, o-acylbenzoyl chloride, and trialkyl phosphites.Treatment of 1 with lithium diisopropylamide gave 13-substituted 8H-dibenzoquinolizin-8-ones by intramolecular Wittig-Horner reaction.Especially, 13-alkoxy and dimethylamino derivatives were obtained in good yields.A similar reaction of dimethyl 1--1,2-dihydro-2-quinolylphosphonate was also described.
Aspects of Tautomerism: Part 14 - Alcoholysis of A-ring Substituted ortho-Benzoylbenzoyl Chlorides: Evidence for Solvent Involvement in Determining Nature of Transition State.
Bhatt, M. Vivekananda,Somayaji, Vishwanatha,Shashidhar, M. S.
, p. 1219 - 1222 (2007/10/02)
Rates of alcoholysis of A-ring substituted o-benzoylbenzoic acid chlorides with 10percent methanol, 10percent ethanol, 50percent isopropanol and 50percent cyclohexanol in acetone medium have been measured.The Hammett ρ-values range from -2.2 to -0.76.These results have been interpreted as evidence for transition states which vary gradually in their degree of charge separation and have features of both SN1 and SN2 reactions.
Aspects of Tautomerism : Part XI - Substituent Effects on Solvolysis of o-Benzoylbenzoic Acid Chloride Derivatives
Bhatt, M. Vivekananda,Ashry, Shaker H. El
, p. 487 - 491 (2007/10/02)
Kinetics of solvolysis of variously substituted o-benzoylbenzoic acid chlorides in aqueous dioxane and aqueous acetone have been studied.Common ion effect and salt effect along with solvent isotope effect have been determined.The rate constants for the so
